Holder tells Caroline that he must make a choice - "between you and her." She knows he means Linden and says only their unborn daughter matters now. Linden gets called and finds Kyle, who's been shot by the cadet search party. He identifies Fielding, Knopf, and Rayne as the murderers. Meanwhile, Knopf suggests killing Rayne, but she mentions cleaning up after them when they stole her car the night of the murders. As the detectives arrive, Knopf and Fielding are shot. Rayne confesses, and Linden finds evidence that Kyle was Rayne's son that she gave away 17 years previously. Linden wants to arrest Rayne for all the murders, but Holder wants Kyle for the Stansburys'. Frantic, Linden points her gun at Holder, thinking he has worked against her, even with Reddick's investigation. She takes Kyle to his family home, where he becomes aware of committing the murders. Fielding and Knopf were there that night, but left, and Kyle killed his family. At the station, Linden confesses to Reddick having killed Skinner and absolves Holder. Mayor Darren Richmond arrives to squelch the confession. Skinner's death was ruled a suicide, and no killer cop shall tarnish another cop's or Richmond's image.
Five years later: Holder and Caroline are divorced, with joint custody of their daughter, Kalia. Linden has been traveling, now that Jack is in college. She apologizes to Holder for not believing in him, as he was her one true friend. She calls Seattle a "city of the dead", intent on leaving it. He hugs her to try and get her to stay with him, but she drives away. However, she later returns to him.