Tricia and Ethan arrive at a remote upstate house during a snowstorm and become stranded when their realtor never appears.

Tricia discovers the house belonged to missing psychiatrist Dr. Adrienne Hale, whose boyfriend Luke was suspected of killing her.

Tricia secretly discovers a hidden room behind a bookcase containing thousands of Adrienne's recorded therapy session cassettes.

Tricia listens to a PL recording in which a young woman describes surviving a brutal attack that killed her fiancé and two friends.

Patient EJ arrives at Adrienne's door holding a blackmail video of her slashing a stranger's tires, forcing her to resume treating him.

Luke breaks into EJ's apartment on Adrienne's orders and erases all copies of the tire-slashing blackmail video from EJ's devices.

Tricia and Ethan discover a decomposed body hidden beneath a trapdoor under the couch in Adrienne's office.

EJ confronts Adrienne with a new copy of the video and demands a sexual relationship, threatening to ruin Luke as well.

Ethan and Tricia discover that Luke Strauss has been secretly living in Adrienne's abandoned house.

Ethan holds Luke at knifepoint and forces Tricia to bind Luke's hands with duct tape.

Tricia listens to the final PL recording in which Adrienne confronts Patricia Lawton directly and reveals she knows Tricia is the real killer.

Tricia lures an abducted Edward Jamison to Adrienne's house; Adrienne seals him inside the trapdoor beneath the office floor.

Tricia goes to Adrienne's home and kills her, determined to eliminate the one person who knows she murdered her fiancé and friends.

Ethan is caught burning the GW tapes and confesses to Tricia that he murdered his own mother, Gail Wiley.

Tricia and Ethan confess their respective murders to each other and go together to kill Luke in Adrienne's office.

Tricia and Ethan become stranded in a remote house that once belonged to missing psychiatrist Dr. Adrienne Hale, and Tricia begins secretly listening to Adrienne's hidden therapy recordings. Through the tapes, the story of Adrienne's blackmailer EJ unfolds alongside the present-day discovery of a decomposed body hidden under the office floor. The sudden appearance of Adrienne's ex-boyfriend Luke, secretly living in the house, forces Tricia and Ethan into a dangerous confrontation. A final tape reveals that Tricia is herself one of Adrienne's former patients and the true killer of her fiancé and two friends. The couple's mutual confessions and shared secrets bind them together as they make a lethal decision about Luke and settle into the house where it all began.

The headline events that drive the story from beginning to end.

Adrienne fires her literary agent Paige after sensing that Paige does not genuinely respect her work.

Tricia spots a glass of water with fresh condensation by the kitchen sink, convincing her that someone else is in the house.

Adrienne receives an email canceling patient EJ's sessions because his mother will no longer pay, and feels relieved to be free of him.

Ethan finds a bottle of South African cabernet sauvignon in Adrienne's house and pours glasses for himself and Tricia.

Adrienne meets Luke at the public health clinic after a receptionist suggests he could install a security system at her remote home.

Tricia reveals her pregnancy to Ethan; his enthusiastic reaction immediately relieves her deep anxiety about telling him.

In a recorded session, EJ describes a casino fantasy about an anonymous woman who approaches him at the craps table and takes him to her room.

Tricia listens to the LUKE recording and concludes that Luke's voice does not sound like that of a killer.

Tricia finds a clean sleeping bag and fresh pillow in the otherwise dusty attic, confirming that someone has been living there recently.

Luke returns to Adrienne's house from the break-in, admits he watched the blackmail video despite her instructions, and drives unconscious EJ home.

Adrienne runs into patient Gail at a grocery store; Gail says she spoke honestly with her son about her fears and is now feeling better.

Ethan discovers the hidden room of tape recordings for the first time as he prepares to walk to the main road for help.

Luke tells Tricia that the body under the floorboards cannot be Adrienne's, because Adrienne never wore jeans.

Tricia reads a news article about Edward Jamison's disappearance and realizes she could be implicated in his murder.

Tricia and Ethan buy Adrienne's house and move in with their young daughter; Luke's body is quietly buried in the garden.

This pool traces the supporting events that build the world of the novel, from Adrienne's professional life and her first encounter with Luke, to the careful clues Tricia uncovers while stranded in the house. Adrienne's relationship with Luke develops from a chance meeting at a clinic through a security installation and an unexpected romance, even as EJ's extortion scheme spirals out of control. In the present, Tricia pieces together the truth through recordings, strange physical clues, and overheard conversations, while also navigating her own secret pregnancy. The pool closes on the quiet aftermath, with Tricia and Ethan having purchased the house and settled into a deceptively peaceful domestic life.

The significant moments that fill in the story's full picture.

Tricia finds a strange footprint pressed into the dust of the house, but Ethan dismisses her concern.

Tricia silently admits to herself that she is concealing a secret from Ethan that fills her with dread.

Adrienne reveals she has been secretly recording every therapy session on cassette tape, labeling each with patient initials.

Tricia listens to a GW recording in which an elderly woman describes paranoid fears that her own son is plotting to kill her.

Luke installs a security system at Adrienne's home; a mock therapy session leads unexpectedly to the two sleeping together.

Adrienne tells Luke she loves him for the first time, privately acknowledging to herself that the declaration is a calculated manipulation.

Adrienne drugs EJ's wine with Ativan during a session, rendering him unconscious while Luke carries out the break-in.

Tricia accidentally drops her wedding ring under Adrienne's office couch, leading Ethan to move the couch and expose a hidden trapdoor handle.

EJ texts Adrienne from a new number to reveal that he has yet another copy of the tire-slashing video and has not been stopped.

Adrienne realizes she dangerously misdiagnosed EJ as harmless after he implies he engineered his parents' fatal car accident.

Adrienne suggests to Luke that they should kill EJ; Luke refuses and walks out of her home entirely.

Tricia confirms to the reader that she is Patricia Lawton and reveals she murdered her fiancé and two friends after discovering his affair.

Adrienne reconciles with Luke after her book tour and privately resolves to never tell him the truth about Edward Jamison's fate.

Tricia confronts Ethan as he burns the GW tapes in the night and presses him until he finally confesses to murdering his mother.

Tricia reflects in the epilogue that she is already prepared to kill Ethan if he ever threatens to crack and expose their shared secrets.

This pool focuses on the pivotal moments of revelation and decision that give the novel its psychological depth, beginning with the small but ominous clues Tricia notices in the house. Adrienne's secret recording habit, her dangerous misreading of EJ, and her calculated manipulation of Luke each mark a point of no return for her character. In the present, the accidental discovery of the trapdoor and the contents of the final PL tape force Tricia to stop hiding her true identity. The pool closes on the chilling epilogue revelation, in which Tricia privately admits she is already preparing for the possibility of having to kill her own husband.