53 pages 1-hour read

I Know Who You Are: A Novel

Fiction | Novel | Adult | Published in 2019

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Chapters 19-37Chapter Summaries & Analyses

Content Warning: This section of the guide includes discussion of child abuse, graphic violence, sexual violence, rape, physical abuse, emotional abuse, animal cruelty and death, substance use, and illness or death.

Chapter 19 Summary

In Aimee’s dressing room, Detective Croft questions her about the night that her husband, Ben, disappeared. Croft shows her a photo of Ben’s bloodied face from an assault report he filed against her that day. Croft brings up her childhood amnesia and suggests that alcohol might make her forget an attack.


Croft then asks about her rumored affair with costar Jack Anderson and challenges her timeline, stating that Ben called a domestic abuse counselor from their house when Aimee claimed to be home. Croft plays a voicemail from the call in which Ben expresses fear that she’ll kill him.

Chapter 20 Summary

In Essex in 1987, Maggie blindfolds Aimee and leads her into a decorated room for Christmas. When the power goes out, John feeds coins into the electricity meter. The presents under the tree, addressed to Aimee, are dusty. She spots a photograph of another girl who looks like her, but Maggie quickly hides it. While John takes Polaroids, Aimee opens her gifts, and at Maggie’s prompting, calls her “Mum.”

Chapter 21 Summary

After the police leave, Jack invites Aimee out for a drink. Convinced that Ben is framing her, she joins Jack at the Pinewood Studios Club Bar. Aimee tells him that Ben is missing and that the police suspect her. Jack dismisses the idea and comforts her.

Chapter 22 Summary

In 1988, Maggie assigns Aimee to mop the betting shop floors each night, promising a McDonald’s Happy Meal as a reward. Left alone, Aimee tells an elderly customer that her real name is Ciara. When Maggie returns, she hits Aimee for using the wrong name and for lying about cleaning the toilet. As punishment, Maggie throws the Happy Meal on the filthy floor and forces Aimee to eat it.

Chapter 23 Summary

At the bar, Alicia White, Aimee’s old rival from school, arrives with her hair dyed to match Aimee’s. Alicia flirts with Jack, suggesting that they’re close, and belittles Aimee’s career, even hinting that their agent, Tony, plans to drop her. Jealous and worried, Aimee continues drinking. After Alicia leaves, Aimee finds herself attracted to Jack.

Chapter 24 Summary

In 1988, John takes Aimee outside for the first time to use her as cover while depositing cash at a bank. He tells her that the girl in the photograph disappeared and that Aimee has taken her place. Outside, three masked men attack them for the money and grab Aimee. Maggie appears, holding a gun, and when she fires a warning shot, the attackers flee. Aimee hugs her for the first time.

Chapter 25 Summary

Aimee has a dream that she recognizes as a memory. In it, Ben kicks open her bolted bedroom door, strangles and sexually assaults her, and then uses his belt to beat her. She knows that this has happened before and remembers vowing that the last time would be the final one.

Chapter 26 Summary

Aimee wakes, accepting the dream as a memory of Ben assaulting her after she asked for a divorce. Hungover and unable to remember getting home, she hears footsteps downstairs and fears her stalker is in the house. She reaches for the gun she keeps under the bed, but it’s missing. As footsteps approach, the door opens, and she’s shocked to see who’s there.

Chapter 27 Summary

In 1988, after the attempted robbery, Aimee hears Maggie and John arguing. John shouts that “Aimee is dead” (110), and something smashes. Terrified, Aimee hides. Maggie enters, gets into bed with her, and holds her, promising protection.

Chapter 28 Summary

Jack stands in the doorway. He explains that Aimee got drunk, so he brought her home and slept on the floor. Aimee notices a text from Alicia on his phone. On her own phone, a viral article by Jennifer Jones displays photos of her and Jack looking intimate, implying an affair; one image was taken from inside her locked dressing room. She receives an urgent email from her agent, Tony, requesting a meeting.

Chapter 29 Summary

Maggie takes the family to a pub, where Aimee meets a man who calls himself Uncle Michael and resembles Maggie. The adults discuss attacks on businesses that have Irish links. John gives Aimee coins for the Pac-Man arcade machine, and Michael remarks that Aimee has become a “daddy’s girl,” which displeases Maggie.

Chapter 30 Summary

As Aimee prepares to meet her agent, she finds an unfamiliar red lipstick in her bag. Jack sees a childhood photo of Ben and says it looks nothing like the man Aimee married. Detective Croft arrives and shows Aimee CCTV footage of a woman resembling Aimee withdrawing her money, using her passport as ID. Croft says the threatening emails signed by “Maggie” came from Aimee’s laptop. When Croft asks to see her registered gun, Aimee refuses, insisting that she won’t allow a search without a warrant.

Chapter 31 Summary

In 1988, Maggie gives Aimee elocution tapes to erase her Irish accent and promises that if she masters an English accent, she can start school. Maggie calls this skill a tool for survival and tells her never to show her true self to strangers.

Chapter 32 Summary

At the agency, Tony shows Aimee an email from Ben claiming that she can’t handle work pressure. Instead of firing her, Tony says that a top director named Fincher wants to meet her for a new film. Tony also says that he has dropped Alicia as a client. Stunned, Aimee leaves, and Tony advises her to fight hardest when she expects to lose.

Chapter 33 Summary

In April 1988, Aimee celebrates a new birthday and is told that she’s seven. John gives her a hamster, whom she names Cheeks, and Maggie gives her a Walkman for her elocution tapes. After Aimee blows out her candles, John takes a Polaroid and places it in the frame on the mantelpiece, over the photo of the other girl.

Chapter 34 Summary

After she meets with Tony, Aimee returns home to find her street cordoned off by the police. Forensic officers carry a stretcher with a covered body out of her front door. Certain that they’ve found a body in her home, Aimee panics and flees.

Chapter 35 Summary

John installs a “fruit machine” (a slot machine) and a Pac-Man game in the shop. One evening, Aimee ignores Maggie’s calls for dinner while playing. Enraged, Maggie leads Aimee to the deep fat fryer and forces her to watch as her pet hamster, Cheeks, dies in the hot oil.

Chapter 36 Summary

Aimee wanders through London and ends up at the office where Ben claimed to work. The receptionist and another employee tell her that Ben was fired for “gross misconduct” more than two years ago and that the police have already asked about him.

Chapter 37 Summary

In 1988, a man appears at the back window of the shop and asks to use the phone. He says his dog is lost, so Aimee unlocks the door to help him. The man pulls a knife, demanding to know where the safe is. When John appears, the intruder grabs Aimee and holds the knife to her throat. Maggie brings a bag of money and, as she hands it over, raises a gun and shoots the man in the face, killing him.

Chapters 19-37 Analysis

The alternating narrative structure continues as the primary mechanism for the novel’s thematic exploration of The Unreliability of Memory as a Consequence of Trauma. The fragmented timeline mirrors Aimee’s fractured consciousness, compelling readers to assemble a coherent reality from disjointed evidence. Chapter 25 presents the significant narrative event of Aimee’s dream, in which she relives Ben’s sexual assault, not as a simple recollection but as a “dream of a memory, rather than a memory of a dream” (106), highlighting how trauma resurfaces through somatic, involuntary responses rather than linear thought. The text juxtaposes Aimee’s internal validation of this experience with the external evidence that Detective Croft presents to Aimee in Chapter 19: the photograph of Ben’s beaten face and the recorded voicemail. This structural choice places readers in the same disoriented position as Aimee, caught between the certainty of her remembered pain and the “facts” that criminalize her. Her inability to recall how she got home from the bar where she went with Jack solidifies her status as an unreliable narrator, not due to guile but due to alcohol- and stress-induced memory gaps, making her vulnerable to gaslighting.


This section further develops The Fragility of a Constructed Identity as a theme by detailing Ciara’s systematic deconstruction and Aimee’s fabrication. The process is depicted as a series of lessons in performance, linking Aimee’s future profession to her childhood survival strategy. Maggie’s instruction to listen to elocution tapes in Chapter 31 is not merely about accent modification but about erasing the self. Maggie frames this erasure as a necessary skill, asserting that as long as Aimee never forgets who she truly is, “acting will save [her]” (128). This statement is ironic, as the constant performance is what causes Aimee to lose her grip on her identity. The creation of a new birthday, the replacement of the original Aimee’s photograph with one of Ciara (the new “Aimee”), and the enforcement of her using the name “Aimee” through violence all contribute to her psychological erasure. In the present, this trauma manifests in Aimee’s professional life. Her rival, Alicia White, physically mirrors her by dyeing her hair, turning Aimee’s constructed identity into a costume that another can adopt. Aimee’s life as an actress is therefore not a chosen career but a continuation of a trauma response that has blurred the line between the person she is and the roles she plays.


The dynamic between Ciara and her captors thematically explores The Destructive Nature of Deception in Relationships. Maggie and John’s treatment of Ciara establishes a blueprint for abusive intimacy that shapes Aimee’s future connections. The text weaponizes the concept of love as a tool for manipulation. In Chapter 22, Maggie’s punishment (forcing Aimee to eat a Happy Meal off a filthy floor) is an act of psychological warfare. It combines the promise of a reward with humiliation, conditioning Aimee to associate obedience with affection and defiance with degradation. Maggie reinforces this lesson in Chapter 35 when she murders Aimee’s pet hamster in a deep-fat fryer to punish her for disobedience. The act is a targeted lesson in dependency, designed to eliminate any external source of comfort and solidify Maggie as Aimee’s sole protector. John’s conflicting behavior, which mixes paternal gestures with disturbing actions, further complicates the emotional landscape, teaching Aimee that affection and threat can coexist. This early exposure to betrayal disguised as care normalizes the dynamics of abuse she later experiences with her husband.


Symbols and motifs deepen the psychological tension. The gun, which these chapters introduce, signifies cyclical violence and corrupted safety. For Ciara, Maggie’s gun represents a terrifying form of protection; it’s the instrument that saves her from robbers but also solidifies Maggie’s violent authority. In the present, the gun Aimee buys for protection goes missing, transforming a signifier of agency into a source of vulnerability and a key piece of incriminating evidence. This connects her past trauma directly to her present danger, illustrating how survival tools learned in childhood can become instruments of one’s downfall. Aimee becomes absorbed in the Pac-Man arcade game, in which the player navigates a maze while being hunted, signifying her own trapped existence. Her failure to heed Maggie’s call while playing the game leads to her hamster’s traumatic death, linking her brief escape into a game world with devastating real-world consequences and reinforcing the idea that she has no true escape from her captors’ control.


The craft elements of juxtaposition and foreshadowing contribute to the novel’s sense of psychological inevitability. The contrast between Maggie’s moments of seeming tenderness (such as holding the terrified Ciara after the attempted robbery) and her calculated cruelty creates a disorienting portrait of someone who is both an abuser and a protector. This duality explains Ciara’s conflicted attachment and Aimee’s subsequent inability to navigate healthy relationships. The text juxtaposes past and present events to draw direct parallels. For instance, the revelation that Ben was fired for gross misconduct two years earlier echoes the deception that Ciara endures, revealing that Aimee’s marriage is built on lies that mirror her childhood. The climactic event of this section (when Maggie shoots an intruder to protect Aimee in Chapter 37) is a critical piece of foreshadowing. This act of extreme violence, committed by her primary female role model, provides Aimee with a learned response to an inescapable threat, establishing a precedent for lethal self-defense.

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