Split Screen Characters
by Lee Goldberg

Split Screen has a big ensemble cast, but Eve Ronin anchors it. Around her are sheriff's detectives, deputies, medical examiners, and crime scene techs, plus TV people, estranged family, and a mix of mob and criminal figures. Duncan Pavone stays central as her loyal partner, while Erin Casey, Lauren Robinson, and the various antagonists keep pulling Eve in different directions.
On this page you will find each character's role in the investigation, a short description, and the relationships and story arcs that connect them. It covers allies, suspects, family, Hollywood players, and procedural figures, so you can track who matters to which case without getting lost in the sprawl.
Main Characters
Eve Ronin
ProtagonistLASD homicide detective investigating Juliette Winter's death, the Ryan Massey murder, the shooting of Erin Casey, and the mobile-range explosion. She is driven, guilt-ridden over Duncan's situation, and increasingly aware of how her public image is used by others. She is also Lauren Robinson's half sister through Vince Nyby.
Arc: She is coerced into a publicity deal with Sheriff Gifford to protect Duncan, solves multiple cases, confronts family manipulation, admits she needs help, and ends the story vowing that justice will be served.
- Duncan Pavone — her detective partner
- Erin Casey — the actress who portrays her and is shot in her place
- Lauren Robinson — her newly discovered half sister
- Sheriff Waylon Gifford — the sheriff who pressures and later praises her
Hank Ketchel
AntagonistA veteran deputy who resents Eve's promotion and becomes the central antagonist of the range-explosion case. He is revealed to have sprayed flammable vapor into the mobile shooting range, staged a rescue to explain his burns, and killed Eddie Clayton out of jealousy. He is shot dead by Duncan after drawing a gun on Eve at Eddie's funeral.
Arc: He goes from resentful deputy and supposed hero to exposed arsonist and murderer, then is killed after admitting his motive at the funeral.
- Eve Ronin — the detective he resents and later confronts
- Eddie Clayton — his romantic rival and victim
- Amy Ketchel — his ex-wife
- Rondo Whittaker — the deputy he drags from the burning trailer
- Duncan Pavone — the detective who shoots him
Dr. Ted Hoffman
AntagonistDr. Ryan Massey's medical partner, who is seen on a car camera striking Massey with a bat. He claims his reputation is above reproach and tries to hide the ketamine scandal, but he is arrested for conspiracy, obstruction of justice, and murder. He had framed Mira Jurek and Toby Keeling for Massey's death.
Arc: He goes from respected clinic partner and accuser of Mira and Toby to exposed killer and arrestee after Eve plays the car video.
- Dr. Ryan Massey — his medical partner whom he kills
- Marilu Corso — his nurse/receptionist
- Mira Jurek — a suspect he helps frame
- Toby Keeling — a suspect he helps frame
- Georgina Sabella — connected through the ketamine investigation
Itzik Halevi
AntagonistA reputed Israeli mobster whose operation includes high-roller gambling junkets, a limo service, and Bespoke Eats. He confronts Lauren at the Topanga cliff, demands to know who was working with her, and is shot and arrested. He is connected to the poker parties and the exploitation of hostesses.
Arc: He goes from untouchable mobster host to wounded captive after Lauren's infiltration and Garvey's shooting.
- Lauren Robinson — the woman he accuses of cheating him
- Isaac — his enforcer
- Rona Halevi — his wife, who owns Bespoke Eats
- Stanley 'Tubbs' Garvey — the detective who shoots and cuffs him
Ragat Omarov
AntagonistA Russian mob figure whose brand marks the gunmen connected to Erin Casey's shooting. He is in jail awaiting trial on theft and extortion charges for posting nude pictures of Erin and other celebrities and trying to blackmail them. He is accused of ordering the shooting to keep Erin from testifying.
Arc: He does not appear directly but is identified as the power behind Erin's shooting and the target of the investigation.
- Erin Casey — the victim he posted nude photos of and allegedly ordered shot
- Vadim Kuznetsov — a rival who explains his operation and brand
- Eve Ronin — the detective who names him as behind the shooting
Georgina Sabella
AntagonistJuliette Winter's personal assistant for ten years and former fan-club president, who found Juliette dead and initially appears as a grieving witness. Tox results and texts lead Eve to arrest her for Juliette's murder; she says Juliette had been killing herself for years and someone else gave the shots. She confesses after being Mirandized and gives Eve her phone.
Arc: She goes from grieving assistant to arrested suspect and confessor in Juliette Winter's murder case.
- Juliette Winter — her employer and the woman she is arrested for murdering
- Dr. Ryan Massey — the doctor connected to the ketamine supply
- Eve Ronin — the detective who questions and arrests her
Isaac
AntagonistItzik Halevi's enforcer, who rides in the back seat of Lauren's car and holds a hunting knife to her throat while Halevi questions her. Eve shoots him in the knee, and he releases Lauren before falling off the cliff. He acts on Halevi's orders and threatens to cut Lauren if she lies.
Arc: He goes from armed enforcer to wounded captive after Eve shoots him during Lauren's rescue.
- Itzik Halevi — his boss
- Lauren Robinson — the woman he holds at knifepoint
- Eve Ronin — the detective who shoots him
Supporting Characters
Duncan Pavone
SupportingEve's detective partner, initially deskbound pending an internal affairs matter after taking the fall in the Lansing cover-up. He remains loyal to Eve, helps investigate the cases, and is later offered the captaincy of the Lost Hills station. He is a food-focused, steady presence who cares deeply for Eve.
Arc: He goes from being threatened with arrest and losing benefits to shooting Hank Ketchel and being offered command, ending with a decision due by morning about whether to become Eve's captain.
- Eve Ronin — his detective partner
- Gracie — his wife, an ovarian cancer survivor
- Sheriff Waylon Gifford — the sheriff who threatens him and later offers him the captaincy
- Hank Ketchel — the deputy he shoots at Eddie Clayton's funeral
Erin Casey
SupportingThe actress who plays Eve Ronin on the TV series and rides along with Eve as research. She is eager, selfie-taking, and determined to portray Eve responsibly, but she is also mistaken for Eve and shot by a masked gunman. She later promises to testify and asks Eve not to end the show.
Arc: She moves from excited observer to shooting victim and witness, surviving surgery and insisting on testifying against Ragat Omarov.
- Eve Ronin — the real detective she portrays and shadows
- Jen — Eve's mother, who befriends and praises her on set
- Simone Harper — the showrunner she is with when she is shot
- Ragat Omarov — the man accused of posting her nude photos and ordering her shooting
Lauren Robinson
SupportingEve's half sister and Vince Nyby's daughter, who deals poker at parties tied to Itzik Halevi's operation. She rejects Eve at first, claims to work for a caterer, and is later revealed to have infiltrated Halevi's gambling operation after her friend Cindy Epson was murdered. She uses Eve and the car tracker as part of her scheme.
Arc: She goes from hostile unknown half sister to apparent victim, then is revealed as a manipulative podcast-driven infiltrator whose cover story is mostly true and accepted by investigators.
- Eve Ronin — her half sister, whom she manipulates and later works with
- Vince Nyby — her father
- Brady — her mother
- Itzik Halevi — the mobster whose operation she infiltrates
- Cindy Epson — her murdered college friend
Sheriff Waylon Gifford
SupportingThe new sheriff who uses Eve's fame for departmental publicity and threatens Duncan's arrest and benefits to coerce her. He releases videos, stages press conferences, and reshuffles the station at the end. He presents himself as cleaning up the department's legacy while managing its image.
Arc: He goes from coercing Eve into promotional work to publicly praising her and promoting or reassigning key personnel after the cases close.
- Eve Ronin — the detective he pressures into publicity work and later praises
- Duncan Pavone — the partner he threatens and later offers a captaincy
- Megan Beatie — the acting captain he promotes to West Hollywood
- Denise Fields — the public information officer who works with him
- Richard Lansing — his predecessor, whom he publicly blames
Megan Beatie
SupportingEve's acting captain and former commanding officer in Lancaster, who is skeptical of Erin Casey's ride-along and warns Eve about blame and credibility. She later confronts Eve about disobeying orders but also uses Eve's fast case closures for her own advancement. She is promoted to full captain of the West Hollywood station.
Arc: She goes from acting captain worried about Eve's publicity stunt to promoted captain who leaves Lost Hills without a goodbye.
- Eve Ronin — her subordinate and detective
- Duncan Pavone — the detective she confronts about desk duty
- Sheriff Waylon Gifford — the sheriff who reassigns and promotes her
- Stanley 'Tubbs' Garvey — a detective she distrusts
Stanley 'Tubbs' Garvey
SupportingA homicide detective who works off-duty security at Johnny Sington's parties and becomes Eve's coerced eyes on Lauren. He later calls Eve for backup when Halevi confronts Lauren, shoots Halevi, and helps craft the cover story. He is a celebrity-suck-up in Beatie's view but proves loyal and brave.
Arc: He goes from self-interested party security to Eve's trusted backup and public hero after the Topanga incident.
- Eve Ronin — the detective he calls for help and backs up
- Lauren Robinson — the woman he tries to protect at the party house
- Itzik Halevi — the mobster he shoots and cuffs
- Biddle — his detective partner
Andy Walker
SupportingA detective and arson investigator who backs Eve up, helps investigate Vadim and the range explosion, and becomes her new partner at the end. He is married to Carly and has a young son, Cody. He is practical, joking, and willing to bend procedure to help Eve.
Arc: He goes from occasional backup and arson investigator to being assigned to split his time between Eve and Sharpe as her new partner.
- Eve Ronin — colleague and later her new partner
- Carly Walker — his wife
- Cody Walker — his son
- Walter Sharpe — his arson-investigator partner
- Vadim Kuznetsov — an adversary and occasional confidential informant
Walter Sharpe
SupportingAn arson investigator and Walker's partner who reexamines the shooting-range fire and finds the scorch marks and polymer tubing that prove Ketchel's role. He is doggedly persistent and distrustful of official determinations that do not fit the evidence. He offers Eve a place with his unit.
Arc: He goes from reviewing the fire as possible negligence to proving Ketchel's staged arson and helping close the case.
- Andy Walker — his arson-investigator partner
- Eve Ronin — the detective he instructs and offers a transfer
- Duncan Pavone — colleague he congratulates
- Hank Ketchel — the deputy whose arson he helps prove
Juliette Winter
SupportingA former child star found dead in her upstairs steam room. She lived alone, had a shrine room of memorabilia, and was excited about a Tokyo birthday and a sitcom reboot. Her death is later shown to be a ketamine overdose administered by someone else.
Arc: She begins as an unexplained death and becomes the victim of a murder involving Dr. Ryan Massey and Georgina Sabella.
- Georgina Sabella — her personal assistant and former fan-club president
- Dr. Ryan Massey — the doctor who supplied her ketamine
Dr. Ryan Massey
SupportingA doctor found beaten to death beside his car behind his clinic. He had supplied ketamine to Juliette Winter and was killed by Dr. Ted Hoffman to prevent a clinic scandal. His ex-wife Mira and her boyfriend Toby were initially suspected and framed.
Arc: He begins as a murder victim and becomes the link between Juliette's ketamine death and the clinic conspiracy.
- Mira Jurek — his ex-wife
- Toby Keeling — Mira's boyfriend, who previously attacked him with a bat
- Dr. Ted Hoffman — his medical partner and killer
- Marilu Corso — his nurse
- Juliette Winter — the woman he supplied with ketamine
Mira Jurek
SupportingDr. Ryan Massey's ex-wife, who is intoxicated and hostile when Eve questions her about Massey's murder. She is arrested, claims Massey was killed by a mugger, and later takes a plea deal to testify against Toby. She resents Massey over money and his son.
Arc: She goes from prime suspect to jailed defendant who accepts a plea deal and helps close the Massey case.
- Toby Keeling — her boyfriend
- Dr. Ryan Massey — her ex-husband
- Fred Silsbee — her defense attorney
- Rebecca Burnside — the prosecutor who offers her a plea
Toby Keeling
SupportingMira Jurek's boyfriend and a former strip-club bouncer who previously attacked Dr. Massey with a baseball bat. He claims Massey called him to the clinic and was already dead when they arrived, then throws his protein shake at Eve and flees. He is arrested after Eve tackles him into the pool and later denies murder while admitting the earlier bat attack.
Arc: He goes from suspect and fleeing arrestee to jailed defendant who refuses to confess to murder and needs new counsel after a conflict.
- Mira Jurek — his girlfriend
- Dr. Ryan Massey — the man he previously attacked with a bat
- Fred Silsbee — his defense attorney until a conflict
- Dr. Ted Hoffman — the man who framed him for Massey's murder
Denise Fields
SupportingThe LASD public information officer who relays Sheriff Gifford's requests, gives Eve recording equipment, and handles Eve's videos. She manages press statements and later tells Emilia that bodies must wait for the sheriff's press conference. She is part of the department's image-management machinery.
Arc: She remains the publicity officer coordinating Eve's videos and the sheriff's press messaging throughout the story.
- Eve Ronin — the detective whose videos she receives and posts
- Sheriff Waylon Gifford — the sheriff she works for
- Emilia Lopez — the medical examiner she pressures about the press conference
Tom Ross
SupportingA sheriff's deputy who briefs Eve at crime scenes, dates Eve's sister Lisa, and is friends with Eddie Clayton. He volunteers for Eve's security detail and later proposes to Lisa in the ER. He is grieving Eddie and talks about emotional detachment as survival.
Arc: He goes from cheerful deputy dating Lisa to grieving friend who proposes to Lisa and later escorts Eve after the funeral shooting.
- Eve Ronin — colleague and friend
- Lisa — his girlfriend, whom he proposes to
- Eddie Clayton — his friend and unofficial patrol partner
- Hank Ketchel — the deputy who killed Eddie
Eddie Clayton
SupportingA sheriff's deputy who logs Eve in at Juliette Winter's estate and later becomes a victim of the mobile-range explosion. He is friendly with Tom Ross, dated Libby Gibson years earlier, and was romantically involved with Amy Ketchel. He is killed because Hank Ketchel was jealous of him.
Arc: He goes from comic deputy at the Winter scene to mourned victim whose funeral exposes Ketchel's motive.
- Tom Ross — his friend and unofficial patrol partner
- Libby Gibson — went through training with her and dated years ago
- Amy Ketchel — his girlfriend
- Hank Ketchel — the deputy who kills him
Rondo Whittaker
SupportingThe mobile shooting range master and former driver for Sheriff Lansing, who runs Eve's firearms qualification and warns her about target photos of her and Duncan. He is killed in the mobile-range explosion. His will requested no ceremony and burial alongside his family in Illinois.
Arc: He goes from range master and acquaintance to explosion victim whose death helps expose Ketchel's staged rescue.
- Eve Ronin — the detective he qualifies at the range
- Richard Lansing — his former employer and driver assignment
- Hank Ketchel — the deputy who caused the explosion
Emilia Lopez
SupportingA medical examiner who examines Juliette Winter and later reports autopsy and tox findings for Rondo Whittaker, Eddie Clayton, and Juliette. She is practical and prioritizes her autopsies and family over the sheriff's ceremony. She explains how a ketamine injection could be rationalized as medical treatment.
Arc: She moves from initial overdose suspicion to confirming Juliette's lethal ketamine injections and the fire deaths.
- Eve Ronin — the detective she briefs
- Nan Baker — her crime scene colleague
- Duncan Pavone — colleague on the tox-screen call
- Denise Fields — the public information officer she pushes back against
Nan Baker
SupportingThe crime scene unit head who photographs Juliette's body, tests the beer bottle, and later examines Rondo's body. She challenges Eve about her public video quote and prefers evidence-based answers. She also finds forensic support on the bat in Hoffman's office.
Arc: She remains a skeptical forensic professional who questions Eve's public image while helping establish evidence.
- Eve Ronin — the detective she challenges and briefs
- Emilia Lopez — her medical examiner colleague
Corey Chen
SupportingA medical examiner who arrives at the Massey crime scene, asks Erin for a selfie, and concludes Massey was killed by two baseball bat swings. He later confirms the bat matched Massey's wounds and becomes Eve's companion after her breakup with Daniel. He says he likes to feel needed and is not afraid to be her friend.
Arc: He goes from starstruck medical examiner to Eve's sexual companion and supportive colleague.
- Eve Ronin — colleague who calls him for companionship
- Erin Casey — the actress he asks for a selfie
- Lou Noomis — crime scene colleague
Lou Noomis
SupportingThe CSU team leader who discusses urine evidence with Erin and later finds a bloodied Louisville Slugger under Mira and Toby's bed. He also executes the search warrant at Georgina's home. He shows off for Erin but provides key forensic evidence.
Arc: He remains a forensic specialist whose finds help link the bat to Massey's murder and support the search of Georgina's home.
- Eve Ronin — forensic colleague
- Erin Casey — the actress he shows off to
- Corey Chen — medical examiner colleague
Libby Gibson
SupportingA sheriff's deputy who backs up Eve at Mira's house, handcuffs Toby, and later grieves Eddie Clayton at the explosion scene. She dated Eddie years earlier and believes deputies should have each other's backs because they wear the same badge. She is present when Eve learns Eddie is dead.
Arc: She goes from backup deputy to grieving colleague who reveals her past with Eddie.
- Eve Ronin — the detective she backs up
- Eddie Clayton — went through training with him and dated years ago
- Tom Ross — fellow deputy
- Hank Ketchel — the deputy who caused Eddie's death
Biddle
SupportingA detective and coworker who needles Eve, jokes about writing an action movie based on her and Erin, and later works the Erin Casey shooting with Garvey. He suggests Lavors may have been running interference. He is a skeptical, comic presence in the squad room.
Arc: He remains a squad-room comic and investigator who helps question Eve about her enemies after the shooting.
- Eve Ronin — coworker who needles her
- Stanley 'Tubbs' Garvey — his detective partner
- Ed Lavors — deputy he suspects of possible interference
Ed Lavors
SupportingA deputy who glowers at Eve and is later named as the first deputy on scene after Erin is shot. He swapped shooting-range targets with Fletcher for a sheet with Eve's picture and is confronted by Eve about it. He is hostile toward Eve for exposing corrupt colleagues.
Arc: He remains a hostile deputy whose target-swap prank and presence at the shooting deepen suspicion around him.
- Eve Ronin — the detective he resents and is confronted by
- Gil Fletcher — the deputy who swapped targets with him
- Biddle — the detective who suggests he may have run interference
Gil Fletcher
SupportingA deputy who glowers at Eve and is named as having swapped shooting-range targets with Lavors for a sheet with Eve's picture. He is part of the resentment against Eve for exposing corrupt colleagues. He does not have a larger independent role.
Arc: He remains a hostile deputy tied to the target-swap incident.
- Ed Lavors — the deputy who swapped targets with him
- Eve Ronin — the target of the swapped shooting-range sheet
Vince Nyby
SupportingEve's biological father, a TV director who seduced her mother on a set and left. He asks Eve to help Lauren, later argues with her about profiting from Lauren's podcast and Eve's celebrity, and claims he was protecting his daughters. He is revealed to have asked Jen to marry him.
Arc: He goes from estranged father asking a favor to self-justifying manipulator whose relationship with Jen further alienates Eve.
- Eve Ronin — his biological daughter
- Lauren Robinson — his daughter
- Brady — Lauren's mother, whom he got pregnant and left
- Jen — Eve's mother, who says he asked her to marry him
Jen
SupportingEve's mother, who plays deputy Maggie Malloy on the Ronin TV series and befriends Erin Casey on set. She criticizes Eve's appearance and complains that Erin gets access to Eve's life that she does not. She later emerges from Vince's bedroom in his bathrobe and says Vince asked her to marry him.
Arc: She remains an acting-dreaming, boundary-pushing mother whose relationship with Vince further complicates Eve's family life.
- Eve Ronin — her daughter
- Erin Casey — the actress she befriends on set
- Vince Nyby — her lover, who has asked her to marry him
Lisa
SupportingEve's younger sister and an ER nurse at West Hills Hospital, who dates Tom Ross. She treats Erin after the shooting and later treats Eve's ribs, and she tells Eve she will give her away at the wedding. She is emotionally open with Eve about relationships and therapy.
Arc: She goes from Tom's girlfriend to accepting his proposal later, while pushing Eve toward self-awareness and help.
- Eve Ronin — her sister
- Tom Ross — her boyfriend, who proposes to her
- Erin Casey — the patient she helps treat
Daniel
SupportingEve's boyfriend, a forensic anthropologist, who cooks her dinner and jokes about her surveillance outfit. He later confronts Eve for not being there for him and breaks up with her, saying he will always love her but not if they stay together. He is gone by the time she gets home but leaves her food.
Arc: He goes from affectionate boyfriend to ex who ends the relationship because Eve is single-minded about work.
- Eve Ronin — his girlfriend, whom he breaks up with
Brady
SupportingLauren Robinson's mother and a former partner of Vince Nyby, who says Vince promised her a career but got her pregnant and disappeared. She worries Lauren is making money illegally and gives Eve the caterer name Bespoke Eats. She edits videos and does occasional AD work.
Arc: She goes from worried mother asking Eve for help to having her suspicions about Lauren's secret life partly vindicated.
- Lauren Robinson — her daughter
- Eve Ronin — the half sister of her daughter
- Vince Nyby — the man who got her pregnant and left
Simone Harper
SupportingThe showrunner of the Ronin TV series, who tells Eve the network ordered six scripts and a writers' room is plotting a season about the Bone Canyon case. She asks Eve whether Duncan will lose his badge or be prosecuted. She is with Erin at Espiritu when Erin is shot and survives with superficial wounds.
Arc: She remains a friend and producer who turns Eve's real cases into entertainment and is present at Erin's shooting.
- Eve Ronin — the detective whose life her show dramatizes
- Erin Casey — the actress she is with when Erin is shot
- Duncan Pavone — the detective she calls the unsung hero of the scandal
Rebecca Burnside
SupportingA prosecutor who handles the Massey case and Erin's blackmail case, offering Mira a plea deal to testify against Toby. She arrives at Lost Hills, makes Erin sign a confidentiality agreement, and warns her she may testify. She refuses to free Toby and Mira after learning Hoffman framed them, citing their own admitted or planned false conduct.
Arc: She goes from seeking quick plea deals to pursuing Hoffman and planning charges against Mira and Toby despite the framing.
- Eve Ronin — the detective/prosecutor contact on the Massey case
- Duncan Pavone — colleague on the Massey case
- Erin Casey — her lawyer in Erin's blackmail case
- Mira Jurek — defendant she offers a plea
- Dr. Ted Hoffman — suspect she prepares to interview
Fred Silsbee
SupportingThe defense attorney for Mira Jurek and Toby Keeling, who acknowledges Toby's earlier bat assault on Massey and provides Toby's phone to show a burner call. He declares a conflict of interest and chooses to continue representing Mira. He is trying to avoid murder convictions for his clients.
Arc: He goes from representing both suspects to choosing Mira after a conflict, leaving Toby needing new counsel.
- Mira Jurek — his client
- Toby Keeling — his client until the conflict
- Rebecca Burnside — opposing counsel
Marilu Corso
SupportingDr. Massey's nurse and Dr. Hoffman's receptionist/nurse, who initially believes Mira killed Ryan and later admits Georgina picked up a package left by Massey. She hides behind privacy law before Hoffman tells her to be honest. She is shocked when Hoffman is accused of murder.
Arc: She goes from accusing Mira to reluctantly revealing what she knew about Massey's package and Georgina.
- Dr. Ted Hoffman — her employer
- Dr. Ryan Massey — the doctor she worked with
- Georgina Sabella — the woman she recognized picking up Massey's package
Dr. Travis
SupportingA doctor at West Hills Hospital who reports Erin is out of surgery and in the ICU, describes her injuries and prognosis, and gives Eve a bagged bullet. He later prescribes Percocet for Eve's ribs. He treats Erin and updates the detectives.
Arc: He remains the treating doctor who delivers both Erin's and Eve's medical updates.
- Eve Ronin — patient he has treated before
- Erin Casey — the shooting victim he treats
John Mantley
SupportingA Deputy US Marshal who guards Erin Casey's ICU door and lets Eve in briefly. He is assigned to 24/7 protection because the Marshals Service fears Ragat Omarov will try again. He introduces himself to Eve as fellow law enforcement.
Arc: He remains Erin's protective guard during her hospitalization.
- Erin Casey — the witness he is assigned to protect
- Eve Ronin — fellow law enforcement
Bill Fiset
SupportingA background investigator who tells Eve that Hank Ketchel scored well on written tests but failed the LACoFD physical ability test because he lacked endurance. His information helps Eve understand Ketchel's firefighter ambitions. He provides the personnel background that supports the arson motive.
Arc: He remains a background source whose information fills in Ketchel's failed firefighter history.
- Hank Ketchel — the applicant whose background he investigated
- Eve Ronin — the detective he provides information to
Mr. Elkins
SupportingA man who works in the same office building as Massey's clinic and owns a Faifa with a camera system. He returns to the clinic lot with lunch, explains the camera, and shows Eve and Duncan footage of Dr. Hoffman attacking Massey. He sends the video to Eve and agrees not to speak about it.
Arc: He goes from unaware car owner to key witness whose vehicle camera captures the murder.
- Dr. Ryan Massey — works in the same office building as Massey's clinic
- Dr. Ted Hoffman — the man captured on his car camera
- Eve Ronin — the detective he gives the video to
Dr. Edward Zorba
SupportingA San Bernardino doctor who supplied Dr. Massey with ketamine and is in custody awaiting pickup. He is mentioned as part of the ketamine-supply chain. His arrest supports the case against Hoffman and the clinic.
Arc: He does not appear directly but is identified and taken into custody as part of the ketamine investigation.
- Dr. Ryan Massey — supplied Massey with ketamine
- Duncan Pavone — the detective sent to pick him up
Detective Frank Knobb
SupportingAn LAPD detective who takes Eve's courtesy call before the Valley Super-A confrontation and warns her to wait for LAPD reinforcements. He later questions Eve and Walker about going in without backup. He does not like Eve but helps her reach the Lost Hills scene after the explosion.
Arc: He remains a procedure-minded LAPD detective who objects to Eve's methods but assists after the range explosion.
- Eve Ronin — the detective he warns and later escorts
- Andy Walker — colleague at the Valley Super-A scene
Sam Drury
SupportingA fire captain who emerges from the burned mobile shooting range covered in soot and tells Eve and Duncan the fire is out. He explains that a spark ignited combustible residue into a flash fire that killed everyone inside. He enters the trailer with Walker for a first look.
Arc: He remains a fire expert who provides the initial official explanation of the explosion.
- Andy Walker — colleague at the fire scene
- Duncan Pavone — acquaintance of many years
Quinn Riggler
SupportingAn arson investigator who arrives with Lalo Haig, introduces himself to Eve and Duncan, and jokes with the OSHA investigators. He later says a short from a box fan likely sparked accumulated explosive residue and calls the explosion criminal negligence. He represents the official explanation that Sharpe disputes.
Arc: He remains an official arson investigator whose conclusion is challenged by Sharpe's evidence.
- Lalo Haig — his arson-investigator colleague
- Andy Walker — colleague at the fire scene
- Washington — OSHA investigator he jokes with
- Jefferson — OSHA investigator he jokes with
Lalo Haig
SupportingAn arson investigator who arrives with Quinn Riggler and is introduced to Eve and Duncan. He says the situation is like a rerun of an awful show and that there is no question what happened. He welcomes Walker at scenes as long as Sharpe is not with him.
Arc: He remains an official investigator who accepts the negligence explanation.
- Quinn Riggler — his arson-investigator colleague
- Andy Walker — colleague at the fire scene
Washington
SupportingAn OSHA investigator who arrives with Jefferson, jokes about the dead presidents name, and says the whole trailer was a bomb that could have been set off by the fan short, a gunshot, or snapping fingers. He says they will never know for sure. He helps represent the federal safety investigation.
Arc: He remains an OSHA investigator supporting the negligence explanation.
- Jefferson — fellow OSHA investigator
- Quinn Riggler — arson investigator he jokes with
Jefferson
SupportingAn OSHA investigator who arrives with Washington and says OSHA fines and a payout to a dead man's family should have taught the LASD to clean the trailers and maintain the vent system. He later says he and Washington are Feds who do not work for Gifford. He helps represent the federal safety investigation.
Arc: He remains an OSHA investigator who pushes back against the sheriff's authority.
- Washington — fellow OSHA investigator
- Quinn Riggler — arson investigator he jokes with
Vadim Kuznetsov
SupportingA Russian mobster and occasional confidential informant whom Walker introduces Eve to. He examines surveillance images, explains the gunmen's Cyrillic and prison tattoos, and identifies Ragat Omarov's brand and plumbing business. He says hired killers and dirty cops are bad for business.
Arc: He remains an informant who provides the key identification of Ragat Omarov's men.
- Andy Walker — adversary and occasional confidential informant
- Eve Ronin — the detective he calls by name
- Ragat Omarov — a rival whose crew does not answer to him
- Smushkevich — his guard
Cindy Epson
SupportingA Bespoke hostess found stabbed to death in a Topanga Canyon ravine six months before the story, after dealing cards at a private poker party. She was the same age as Lauren and had $1,000 and six aces in her purse. Lauren says she loved Cindy like a sister and infiltrated Halevi's operation after her murder.
Arc: She does not appear alive but becomes the moral motive for Lauren's infiltration and the link to the Halevi gambling operation.
- Lauren Robinson — her friend and fellow Bespoke hostess
- Itzik Halevi — connected through the gambling parties she worked
Johnny Sington
SupportingA former NFL star whose Encino mansion hosts the poker party where Eve photographs Lauren dealing cards. Eve tracks Lauren's car to his house and sees him at the party. Garvey takes a selfie with him while working security.
Arc: He remains the host whose party exposes Lauren's poker dealing and the Halevi-linked gambling scene.
- Stanley 'Tubbs' Garvey — the security worker who takes a selfie with him
- Itzik Halevi — possibly holds his gambling debt
Rona Halevi
SupportingItzik Halevi's wife and the owner of Bespoke Eats, the catering company that employs Lauren. Eve's research reveals Rona's ownership ties the catering company to Itzik's operation. She is part of the Halevi business network.
Arc: She does not appear directly but is identified as the owner linking Bespoke Eats to Itzik Halevi.
- Itzik Halevi — her husband
- Lauren Robinson — her company employs Lauren as a poker dealer
Amy Ketchel
SupportingHank Ketchel's ex-wife and Eddie Clayton's girlfriend, who sobs deeply at Eddie's funeral. Tom Ross identifies her to Eve, and her presence helps Eve realize Hank killed Eddie out of jealousy. She is central to the motive for the range explosion.
Arc: She appears at Eddie's funeral as the grieving girlfriend whose relationship with Eddie exposes Hank's motive.
- Eddie Clayton — her boyfriend
- Hank Ketchel — her ex-husband
Carly Walker
SupportingAndy Walker's wife, who comes out of their house with Cody and warns Eve not to trade hats with Cody because his diaper has not been changed. She tells Walker to keep Eve safe. She is later mentioned as a therapist Eve considers seeing.
Arc: She remains Walker's wife and a possible source of professional help for Eve.
- Andy Walker — her husband
- Cody Walker — her son
- Eve Ronin — acquaintance she speaks with at the house
Cody Walker
SupportingAndy and Carly Walker's nearly three-year-old son, who runs to Eve with his arms out and tugs at the brim of her hat, asking to trade. His diaper is mentioned by Carly as a warning to Eve. He is a brief domestic presence in Walker's life.
Arc: He remains a small child at the Walker home during Eve's visit.
- Andy Walker — his father
- Carly Walker — his mother
- Eve Ronin — she picks him up and greets him
Smushkevich
SupportingA guard at the back door of Vadim Kuznetsov's office who accepts Walker's gift of Metamucil without stopping them. He is a minor but named part of Vadim's operation. He allows Eve and Walker to enter.
Arc: He remains a gatekeeping guard at Vadim's office.
- Vadim Kuznetsov — guard at his office
Mick Coltrane
SupportingThe younger, thinner actor who plays Duncan on the Ronin TV series. He sits at a table eating and chatting with Duncan at the wrap party. Duncan feels Coltrane accurately embodies his true character and raw masculinity.
Arc: He appears briefly at the wrap party as the actor portraying Duncan.
- Duncan Pavone — the real detective he plays on the show
Rosie
SupportingA McDonald's register worker who gives Duncan the security footage on a thumb drive. Her footage shows the two men with Cyrillic tattoos who had been watching from McDonald's. She is a minor but useful source in the shooting investigation.
Arc: She appears briefly as the McDonald's worker who provides the surveillance footage.
- Duncan Pavone — the detective she gives security footage to
Judge Shoup
SupportingThe judge to whom Duncan sends the search warrant affidavit for Dr. Hoffman's clinic. The warrant supports the arrest and search of Hoffman's office. The judge is a procedural figure in the Massey investigation.
Arc: The judge appears only as the judicial authority approving the search warrant.
- Duncan Pavone — the detective who sends the affidavit
Richard Lansing
SupportingThe former sheriff whom Gifford replaced and publicly blames for departmental negligence. He is also connected to the cover-up that Duncan took the fall for and to Rondo's former driver assignment. Eve considers that he might want retribution.
Arc: He remains a background figure whose legacy and possible motives shadow the department.
- Sheriff Waylon Gifford — his successor, who blames him publicly
- Duncan Pavone — connected through the cover-up Duncan took the fall for
- Rondo Whittaker — his former driver assignment
Ted Nakamura
SupportingA former assistant sheriff connected to the Lansing meeting and the cover-up background. Eve considers that he and Lansing might want retribution after the meeting. He is mentioned as part of the institutional scandal surrounding Duncan and Eve.
Arc: He does not appear directly but remains part of the political fallout and suspicion in the range-explosion case.
- Richard Lansing — former official connected to the same meeting
- Eve Ronin — the detective who considers his possible motives
- Duncan Pavone — connected through the meeting and cover-up