Alone in Poppy’s bedroom closet, Olivia stares at the threat scrawled on the wall—“Someday soon, you’ll be dead”—and recognizes Vincent’s handwriting. She recalls Vincent’s temper and substance abuse, rethinking her childhood assumptions and considering that teenage Vincent may have done something terrible and escaped consequences. She fears she has been trapped into legitimizing his lies through the memoir.

Olivia calls Jack and asks to meet at the preserve, then leads him covertly to Vincent’s old house. After ensuring the neighbor is not watching, she ushers Jack inside, assuring him Vincent still owns the house. In Poppy’s room, she shows Jack the writing, and he reacts with shock as he realizes they are in Poppy’s room.

Overwhelmed, Olivia breaks down and decides to tell Jack the truth: she is ghostwriting Vincent’s memoir about the murders. She explains Vincent’s erratic draft, restrictive rules, and efforts to portray Danny as dangerous, and she shares what she learned from Poppy’s diary about Olivia’s mother’s pregnancy and abortion. Olivia voices the question that now terrifies her: whether Vincent killed Danny and Poppy.

Jack cautions Olivia not to rely on a single sentence and reminds her of Vincent’s alibi. He urges her to think like an objective writer. Olivia resolves to investigate why the district attorney convened a grand jury in 1993 and whether the coroner misjudged time of death, suspecting Vincent’s restrictions were meant to keep her from uncovering contradictions.

Before leaving, Olivia photographs the closet message. As she does, she notices a loose floorboard beneath the closet carpet. She pulls back the rug, lifts the board, and shines her light into the cavity, revealing several film canisters labeled in a young girl’s hand with dates from March through June 1975.

Olivia and Jack recognize that these are Poppy’s missing home movies. The find offers a potentially crucial record of the months leading up to the murders and a new path forward in Olivia’s investigation.