The Women in White Characters
by Sarah Pekkanen

This novel centers on two unlikely protagonists: Riley, a broke and divorced woman barely scraping by, and Betty, an elderly widow stuck in the 1960s. Their bond anchors the story, but the cast around them is just as rich, from grief therapist Sandra and parapsychologist Dr. Trimble, who secretly pull the strings, to the four women who once volunteered at his institute. You'll also meet husbands, exes, students, nurses, and a few odd Seekers, each adding layers to the mystery.
Each character entry covers their role in Betty and Riley's world, what drives them, and how they connect to the Trimble Institute's dark history. You'll find descriptions, personal arcs, and the tangled relationships that shape the plot, from old loyalties and secret loves to betrayals that echo across decades.
Main Characters
Riley Bell
ProtagonistRiley is a divorced, bankrupt woman who takes a live-in caretaker job with Betty Sadler after sleeping in her car. She is dyslexic, dropped out of college, and carries shame about her ex-husband's gambling addiction, but she is perceptive and increasingly resourceful. She investigates Betty's past, rescues Alex Finch, and ultimately becomes the keeper of Betty's story.
Arc: Riley moves from survival mode, self-blame, and lingering love for Danny to reclaiming her agency. She stops enabling Danny, blocks him, and begins telling the truth about Betty and the Trimble Institute.
- Betty Sadler — her employer, companion, and eventual friend; she cares for Betty and inherits her home and money
- Danny — her ex-husband whose hidden gambling addiction destroyed their marriage
- Sandra Lennox — a woman she initially admires, then her drugging captor
- Alex Finch — a young woman she investigates and later rescues
- Hank — a dog she and Betty take home
Betty Sadler
ProtagonistBetty is an elderly woman who hires Riley as a live-in caretaker while living frozen in the 1960s. In 1964 she was a volunteer at Dr. Trimble's institute, labeled Girl Four, with apparent psychic abilities that Dr. Trimble exploited. After the experiments, a car crash, and decades hidden by her husband Douglas, she finally reconnects with the world through Riley.
Arc: After decades of isolation and grief, Betty confronts the past, helps stop Sandra Lennox's experiments, rescues Alex, travels across the country with Riley, and dies peacefully in her sleep. Her final dreams reunite her with Kathleen, Ivy, and Helen.
- Riley Bell — her caretaker and road-trip companion, who becomes like a granddaughter
- Douglas Sadler — her late husband who hid and obsessively protected her
- Dr. Silas Trimble — the researcher who experimented on her and her friends
- Kathleen Moore — fellow volunteer and one of her beloved 'sisters'
- Ivy Lennox — fellow volunteer and one of her beloved 'sisters'
- Helen Hopkins — fellow volunteer and one of her beloved 'sisters'
- Sandra Lennox — Ivy's daughter, whom she wanted to reconnect with but who became her captor
Sandra Lennox
AntagonistSandra is a therapist specializing in grief and the daughter of Ivy Lennox. She presents herself as warm and helpful but secretly replicates Dr. Trimble's Ganzfeld experiments, using therapy patients and vulnerable people as test subjects. She kidnaps Alex Finch and drugs and imprisons Riley and Betty.
Arc: Sandra is exposed and overpowered by Betty and Riley, arrested, and sentenced to life in prison. She remains an empty vessel who refuses to speak after her arrest.
- Riley Bell — her drugged captive and test subject
- Betty Sadler — her captor and opponent, and a woman who once loved her as a child
- Ivy Lennox — her deceased mother whose diaries she reads
- Alex Finch — her therapy patient, kidnap victim, and experiment subject
- Dr. Silas Trimble — the researcher whose methods she resurrects
- Hank — her old dog
Dr. Silas Trimble
AntagonistDr. Trimble is a parapsychology researcher who ran the Trimble Institute in the 1960s, studying ESP through Zener cards, Ganzfeld experiments, and sensory deprivation. He recruited Betty, Kathleen, Ivy, and Helen, made them sign secrecy agreements, and controlled their lives. He craves power, money, success, and immortality.
Arc: He suffers a heart attack during his experiments and later tells the women he is finished with them. In the present, his work and artifacts are resurrected by his grandson Sam and by Sandra Lennox.
- Betty Sadler — his experimental subject, called Girl Four
- Kathleen Moore — his experimental subject
- Ivy Lennox — his experimental subject
- Helen Hopkins — his experimental subject and recruit
- Douglas Sadler — his research assistant and admirer
- Samuel Trimble — his grandson
- Mrs. Trimble — his ignored wife
Supporting Characters
Kathleen Moore
SupportingKathleen is one of the four women who volunteered at the Trimble Institute and one of Betty's closest friends. She appears elegant, composed, and graceful, but she carries hidden trauma from being molested as a teenager by her mother's boyfriend Mac. She is chosen for the final Ganzfeld test and is profoundly traumatized by it.
Arc: After the experiments, Kathleen kills her husband Ronald with a baseball bat while believing she is attacking Mac, then takes her own life. Sam Trimble later reports it as a murder-suicide.
- Betty Sadler — friend and fellow volunteer
- Ivy Lennox — friend and fellow volunteer
- Helen Hopkins — friend and fellow volunteer
- Ronald — her husband, whom she accidentally kills
- Mac — her abuser whom she meant to kill
- Dr. Silas Trimble — the experimenter who tied her down
Ivy Lennox
SupportingIvy is one of the four Trimble Institute volunteers and a close friend of Betty's. She has intuitive gifts and once helped a boy named Charlie earn a scholarship, but she keeps her abilities hidden because of her father's disapproval. She is married to football coach David Lennox and gives birth to Sandra.
Arc: Ivy is worn down by Dr. Trimble's experiments, isolated, and later committed to a psychiatric hospital. She dies when Sandra is four, and in Betty's final dream she appears as one of her lost sisters.
- Betty Sadler — friend and fellow volunteer
- Kathleen Moore — friend and fellow volunteer
- Helen Hopkins — friend and fellow volunteer
- David Lennox — her husband
- Sandra Lennox — her daughter
- Dr. Silas Trimble — the researcher who controlled and punished her
Helen Hopkins
SupportingHelen is the youngest of the four Trimble Institute volunteers, recruited by Dr. Trimble from a Boston factory after a remote-viewing episode. She is shy, insecure, and secretly in love with Betty's husband Douglas, which fills her with guilt. She is one of the women whose friendships are shattered by Dr. Trimble's experiments.
Arc: After Dr. Trimble dismisses her and her friends reject her, Helen goes to a bridge and climbs over the guardrail. Sam Trimble later says she committed suicide by jumping off a bridge on the same day the other women died or disappeared.
- Betty Sadler — her close friend whom she betrays with a secret note about Douglas
- Douglas Sadler — her secret crush
- Kathleen Moore — friend and fellow volunteer
- Ivy Lennox — friend and fellow volunteer
- Dr. Silas Trimble — her recruiter and experimenter
Douglas Sadler
SupportingDouglas is Betty's husband and Dr. Trimble's research assistant in 1964. He is initially devoted to Dr. Trimble and administers Zener-card tests, but after the experiments and Betty's car accident he becomes terrified for her safety. He hides Betty in a house and obsessively protects her for decades.
Arc: Douglas flees with Betty and dies in bed at age eighty-five after years of locking doors, refusing visitors, and rechecking locks. His death leaves Betty alone but also frees her to re-enter the world.
- Betty Sadler — his wife, whom he protects and isolates
- Dr. Silas Trimble — his boss and mentor whom he admires
- Emily Robinson — a test subject he administers questionnaires to
Danny
SupportingDanny is Riley's ex-husband. He had a hidden gambling addiction, handled their finances, incurred debts, and stole items, including what may have been Riley's engagement ring. He continues to contact Riley after their divorce, once giving her new number to a debt collector.
Arc: Danny calls Riley after she pays off his debts, thanks her, and asks for a fresh start, but she tells him never to contact her again and blocks him. He does not change on page.
- Riley Bell — his ex-wife, whom he betrayed and later tries to win back
Alex Finch
SupportingAlex is a college student and sorority member who seems like an outsider. She slept with her psychology professor Joshua Woods, who accused her of cheating, and her student ID went missing. She later vanishes and is discovered as Sandra Lennox's Ganzfeld experiment prisoner.
Arc: Riley finds Alex tied up, blindfolded, drugged, and terrified in a shed, and helps rescue her. Alex later transfers to a smaller school and is doing better.
- Riley Bell — the woman who rescues her
- Sandra Lennox — her therapist, abductor, and tormentor
- Joshua Woods — her psychology professor and affair partner who accused her of cheating
- Betty Sadler — one of the people who helps save her
Samuel Trimble
SupportingSamuel, called Sam, is Dr. Silas Trimble's grandson. He runs a Seekers Collective, tried to write a book about his grandfather, and tells Riley about the 1960s volunteers' deaths. He keeps his grandfather's artifacts, including a pipe and experiment equipment, in his bedraggled house.
Arc: Sam is lured away from his house by Sandra so Riley can escape, and after Betty dies he gives Riley a framed photo of Betty, Ivy, Kathleen, and Helen. He remains interested in his grandfather's dark legacy.
- Dr. Silas Trimble — his grandfather
- Riley Bell — the woman who investigates him and hides in his house
- Sandra Lennox — the woman who lures him outside with diary pages
- Heidi — fellow Seekers Collective member and suspected partner
- Irma — fellow Seekers Collective member and suspected partner
Joshua Woods
SupportingJoshua Woods is a psychology professor at Marquis University and the husband of Elizabeth Harris. Alex Finch says she slept with him and that he accused her of cheating and stole her student ID. Riley suspects him of taking archive files and leaves him a threatening voicemail.
Arc: He does not change on page. Riley's accusation is later complicated when Sandra Lennox is revealed to be the real orchestrator.
- Alex Finch — his student and affair partner
- Elizabeth Harris — his wife
- Riley Bell — the woman who accuses him by voicemail
David Lennox
SupportingDavid is Ivy's husband and a football coach at Marquis University. He is controlling about Ivy's appearance and household duties, expects dinner on the table, and is unhappy about her overnight testing work. He does not visit Ivy in the hospital after Sandra's birth.
Arc: He remains a background figure in Ivy's story and turns his back on her as she is taken away in an ambulance. He does not change.
- Ivy Lennox — his wife
- Sandra Lennox — his daughter
- Betty Sadler — his wife's friend, whose gaze makes her uncomfortable
Ronald
SupportingRonald is Kathleen's husband, described as kind, confident, and utterly in love with her. He is a thoughtful host who cleans up broken glass and bandages Betty's hand at a party.
Arc: He is killed at home by Kathleen when she mistakes him for Mac in the dark.
- Kathleen Moore — her husband, whom she accidentally kills
Emily Robinson
SupportingEmily Robinson is an eighteen-year-old from London who arrives at Marquis in October 1964 and is processed as Girl 1 for Phase Two in the Trimble experiments. Douglas administers tests to her, and Betty sees her around the institute with an English accent.
Arc: She appears only in records and glimpses; her full fate is not detailed in the notes.
- Douglas Sadler — test administrator who gives her a questionnaire
- Dr. Silas Trimble — the researcher whose phase-two program she is entered into
- Betty Sadler — a woman who observes her and feels jealous
Elizabeth Harris
SupportingElizabeth Harris is Joshua Woods's wife and an associate professor of applied psychology. She calls Riley and accuses Alex Finch of lying and harassing her husband, threatening to call the police. Riley describes her voice as venomous.
Arc: She does not appear again after confronting Riley, and the notes do not show her changing.
- Joshua Woods — her husband
- Alex Finch — the woman she accuses of fabricating a relationship with her husband
- Riley Bell — the woman she threatens
Mrs. Trimble
SupportingMrs. Trimble is Dr. Silas Trimble's wife. She sews and launders the women's white laboratory dresses, delivers their meals, and cares for Ivy's baby Sandra during the experiments, but she receives no acknowledgment from her husband.
Arc: She remains a background figure in the 1964 sections and does not have an arc.
- Dr. Silas Trimble — her husband, who ignores her
- Ivy Lennox — the mother of the baby she cares for
- Sandra Lennox — the baby she looks after during the experiments
Mac
SupportingMac was Kathleen's mother's boyfriend who molested Kathleen when she was fourteen, touching her in the dark and whispering to her. He reappears in Kathleen's Ganzfeld vision, taunting her and saying they will play another time.
Arc: He does not appear in the present-day story except through Kathleen's memories and visions. Kathleen believes she sees him looming over her, but she actually kills Ronald.
- Kathleen Moore — her childhood abuser and the intended target of her attack
- Ronald — the man killed in his place
Charlie
SupportingCharlie is a brilliant boy from Ivy's hometown with an abusive home life. Ivy dreams of him running beside a black sedan and makes that vision happen, leading to a UVA scholarship. He later becomes an engineer with a family.
Arc: He thanks Ivy years later for changing his life, and she asks him never to speak of her role. He does not change in the story.
- Ivy Lennox — the girl who helped him win a scholarship
Rudolph Sherman
SupportingRudolph Sherman is the president of Marquis University. He welcomes Ivy and David Lennox to a reception and introduces Ivy to Dr. Trimble, and he appears with Dr. Trimble in a newspaper photograph celebrating a donation.
Arc: He is a background official who does not change or reappear meaningfully.
- Ivy Lennox — guest of honor at his reception
- David Lennox — guest of honor at his reception
- Dr. Silas Trimble — the man he introduces to Ivy
Benjy
SupportingBenjy is a library staff member at Marquis University who helps Riley access the baseline archives of the Trimble Institute. He checks her ID, leads her to the basement, and later says he will report the missing files.
Arc: He does not change; he facilitates Riley's research and then disappears from the plot.
- Riley Bell — library visitor he assists and checks on
Dr. Hernandez
SupportingDr. Hernandez is the ER doctor who examines Betty after her wheelchair fall. She tests Betty's cognition, notes that Betty cannot name the day or the president, and leaves to chart.
Arc: She appears only in the emergency-room sequence and does not have an arc.
- Betty Sadler — her patient
Peggy
SupportingPeggy is a nurse who cares for Betty after her car accident and later helps her leave the hospital. She gives Betty advice to be grateful for what she still has and tells Douglas to let Betty rest.
Arc: She does not change; she supports Betty at a key moment of loss and recovery.
- Betty Sadler — her patient
- Douglas Sadler — Betty's husband, whom she instructs about Betty's care
Officer C. Antonelli
SupportingOfficer Antonelli is a police officer who investigates the broken interior door at Betty's house. She asks about keys and stolen items, and then privately suggests Riley may have accidentally broken the door handle.
Arc: She appears once and leaves; she does not change.
- Riley Bell — the person she questions and privately suspects
- Betty Sadler — the homeowner she interviews
Hank
SupportingHank is Sandra's old black lab, calm around patients and initially seen nudging Riley. He is later brought to a no-kill shelter, and Riley worries he will not be adopted because he is old.
Arc: Betty decides to take Hank home, and he travels with her and Riley on their cross-country road trip, curling up beside Betty as she sleeps.
- Sandra Lennox — his former owner
- Riley Bell — the woman who worries about him being adopted
- Betty Sadler — the woman who takes him home
Heidi
SupportingHeidi is a middle-aged woman with straw-straight blond hair, a member of Sam Trimble's Seekers Collective. She argues about reincarnation and teases Riley as Sam's date. Riley suspects she and her sister may be Sam's partners.
Arc: Heidi does not change; she appears only as a suspicious background figure.
- Irma — her sister and fellow Seekers Collective member
- Samuel Trimble — fellow member and suspected partner
- Riley Bell — a woman she teases as Sam's date
Irma
SupportingIrma is a middle-aged woman with straw-straight blond hair, a member of Sam Trimble's Seekers Collective. She argues about reincarnation and teases Riley as Sam's date. Riley suspects she and her sister may be Sam's partners.
Arc: Irma does not change; she appears only as a suspicious background figure.
- Heidi — her sister and fellow Seekers Collective member
- Samuel Trimble — fellow member and suspected partner
- Riley Bell — a woman she teases as Sam's date
Bill Stevens
SupportingBill Stevens is a journalist from The Atlantic who interviews Riley about Betty's story. He pets Hank, admires Betty's house, asks to record the interview, and encourages Riley to tell the deeper story rather than just the sensational details.
Arc: He appears at the end of the story to hear Betty's tale and does not change.
- Riley Bell — the woman he interviews
- Hank — the dog he pets
- Betty Sadler — the subject of the story Riley tells him