Nolasco is sent to Ulúa prison, where he is treated like a woman-killer. Williams bribes the prison director to visit the dentist twice. Pardo doubts Nolasco's guilt, but the prosecutor ignores him.

Six months later, a young boy finds a woman's body in an alley in Mexico City. Nolasco and Sofía, now a couple, along with Urra, try to stop Williams' murders. Later, the couple faces a new mystery in Paris.