Olivia continues combing through Vincent Taylor's legal pads and finds a stark line, "Danny watched her die," written in the margin. She recalls and collates other earlier margin notes—about burying the neighbor’s cat, possible hiding places, and wanting to kill Danny after discovering their mother's abortion—to assign meaning and context. The new line suggests that Danny witnessed Poppy’s death and strongly implies Vincent was present as well.

The next morning, Olivia confronts Vincent with the exact wording from the legal pad. Vincent’s expression remains guarded, offering no immediate reaction. Olivia stresses the looming deadline and her need for honesty, citing discrepancies between Vincent’s narrative of Danny’s escalation and what Poppy’s films show.

Olivia frames the confrontation as part of her job and asks Vincent directly if his alibi for the murder night was a lie and whether he was at the house. After initially claiming not to remember, Vincent listens as Olivia insists on the truth so they can decide how to handle it in the book.

Vincent finally answers: his alibi was false and he had been at the house that night. He adds that when he arrived, it was already too late, indicating he did not prevent the deaths. The confession reshapes the core timeline and casts new light on earlier clues and contradictions.