The Women in White Characters — Complete Character Guide | Insta.Page

The Women in White Characters

by Sarah Pekkanen

The Women in White by Sarah Pekkanen Book Cover
This character guide covers arcs across the whole book and may contain spoilers.

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

Protagonist

Riley 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 Sadlerher employer, companion, and eventual friend; she cares for Betty and inherits her home and money
  • Dannyher ex-husband whose hidden gambling addiction destroyed their marriage
  • Sandra Lennoxa woman she initially admires, then her drugging captor
  • Alex Fincha young woman she investigates and later rescues
  • Hanka dog she and Betty take home

Betty Sadler

Protagonist

Betty 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 Bellher caretaker and road-trip companion, who becomes like a granddaughter
  • Douglas Sadlerher late husband who hid and obsessively protected her
  • Dr. Silas Trimblethe researcher who experimented on her and her friends
  • Kathleen Moorefellow volunteer and one of her beloved 'sisters'
  • Ivy Lennoxfellow volunteer and one of her beloved 'sisters'
  • Helen Hopkinsfellow volunteer and one of her beloved 'sisters'
  • Sandra LennoxIvy's daughter, whom she wanted to reconnect with but who became her captor

Sandra Lennox

Antagonist

Sandra 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 Bellher drugged captive and test subject
  • Betty Sadlerher captor and opponent, and a woman who once loved her as a child
  • Ivy Lennoxher deceased mother whose diaries she reads
  • Alex Finchher therapy patient, kidnap victim, and experiment subject
  • Dr. Silas Trimblethe researcher whose methods she resurrects
  • Hankher old dog

Dr. Silas Trimble

Antagonist

Dr. 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 Sadlerhis experimental subject, called Girl Four
  • Kathleen Moorehis experimental subject
  • Ivy Lennoxhis experimental subject
  • Helen Hopkinshis experimental subject and recruit
  • Douglas Sadlerhis research assistant and admirer
  • Samuel Trimblehis grandson
  • Mrs. Trimblehis ignored wife

Supporting Characters

Kathleen Moore

Supporting

Kathleen 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 Sadlerfriend and fellow volunteer
  • Ivy Lennoxfriend and fellow volunteer
  • Helen Hopkinsfriend and fellow volunteer
  • Ronaldher husband, whom she accidentally kills
  • Macher abuser whom she meant to kill
  • Dr. Silas Trimblethe experimenter who tied her down

Ivy Lennox

Supporting

Ivy 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 Sadlerfriend and fellow volunteer
  • Kathleen Moorefriend and fellow volunteer
  • Helen Hopkinsfriend and fellow volunteer
  • David Lennoxher husband
  • Sandra Lennoxher daughter
  • Dr. Silas Trimblethe researcher who controlled and punished her

Helen Hopkins

Supporting

Helen 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 Sadlerher close friend whom she betrays with a secret note about Douglas
  • Douglas Sadlerher secret crush
  • Kathleen Moorefriend and fellow volunteer
  • Ivy Lennoxfriend and fellow volunteer
  • Dr. Silas Trimbleher recruiter and experimenter

Douglas Sadler

Supporting

Douglas 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 Sadlerhis wife, whom he protects and isolates
  • Dr. Silas Trimblehis boss and mentor whom he admires
  • Emily Robinsona test subject he administers questionnaires to

Danny

Supporting

Danny 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 Bellhis ex-wife, whom he betrayed and later tries to win back

Alex Finch

Supporting

Alex 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 Bellthe woman who rescues her
  • Sandra Lennoxher therapist, abductor, and tormentor
  • Joshua Woodsher psychology professor and affair partner who accused her of cheating
  • Betty Sadlerone of the people who helps save her

Samuel Trimble

Supporting

Samuel, 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 Trimblehis grandfather
  • Riley Bellthe woman who investigates him and hides in his house
  • Sandra Lennoxthe woman who lures him outside with diary pages
  • Heidifellow Seekers Collective member and suspected partner
  • Irmafellow Seekers Collective member and suspected partner

Joshua Woods

Supporting

Joshua 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 Finchhis student and affair partner
  • Elizabeth Harrishis wife
  • Riley Bellthe woman who accuses him by voicemail

David Lennox

Supporting

David 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 Lennoxhis wife
  • Sandra Lennoxhis daughter
  • Betty Sadlerhis wife's friend, whose gaze makes her uncomfortable

Ronald

Supporting

Ronald 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 Mooreher husband, whom she accidentally kills

Emily Robinson

Supporting

Emily 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 Sadlertest administrator who gives her a questionnaire
  • Dr. Silas Trimblethe researcher whose phase-two program she is entered into
  • Betty Sadlera woman who observes her and feels jealous

Elizabeth Harris

Supporting

Elizabeth 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 Woodsher husband
  • Alex Finchthe woman she accuses of fabricating a relationship with her husband
  • Riley Bellthe woman she threatens

Mrs. Trimble

Supporting

Mrs. 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 Trimbleher husband, who ignores her
  • Ivy Lennoxthe mother of the baby she cares for
  • Sandra Lennoxthe baby she looks after during the experiments

Mac

Supporting

Mac 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 Mooreher childhood abuser and the intended target of her attack
  • Ronaldthe man killed in his place

Charlie

Supporting

Charlie 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 Lennoxthe girl who helped him win a scholarship

Rudolph Sherman

Supporting

Rudolph 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 Lennoxguest of honor at his reception
  • David Lennoxguest of honor at his reception
  • Dr. Silas Trimblethe man he introduces to Ivy

Benjy

Supporting

Benjy 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 Belllibrary visitor he assists and checks on

Dr. Hernandez

Supporting

Dr. 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 Sadlerher patient

Peggy

Supporting

Peggy 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 Sadlerher patient
  • Douglas SadlerBetty's husband, whom she instructs about Betty's care

Officer C. Antonelli

Supporting

Officer 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 Bellthe person she questions and privately suspects
  • Betty Sadlerthe homeowner she interviews

Hank

Supporting

Hank 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 Lennoxhis former owner
  • Riley Bellthe woman who worries about him being adopted
  • Betty Sadlerthe woman who takes him home

Heidi

Supporting

Heidi 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.

  • Irmaher sister and fellow Seekers Collective member
  • Samuel Trimblefellow member and suspected partner
  • Riley Bella woman she teases as Sam's date

Irma

Supporting

Irma 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.

  • Heidiher sister and fellow Seekers Collective member
  • Samuel Trimblefellow member and suspected partner
  • Riley Bella woman she teases as Sam's date

Bill Stevens

Supporting

Bill 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 Bellthe woman he interviews
  • Hankthe dog he pets
  • Betty Sadlerthe subject of the story Riley tells him

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