In the series finale, Cardinal discovers that Eric didn't act alone and the knowledge helps him save Keith. Unfortunately, it may prove too late to keep his daughter Kelly from the vengeful Edie. Meanwhile, Delorme finally finds the answers to Cardinal's dark past.
Dets. Cardinal and Delorme connect Woody Baldwin's hastily disposed of body to Eric Fraser and, subsequently, Eric to Katie Pine and Todd Curry. Now it's up to the police officers to locate him before he gets to Keith. Meanwhile, Cardinal's daughter Kelly pays a surprise visit to her mom.
A small-time burglar gets caught up in Eric and Edie's twisted world when he breaks into their basement dungeon and finds Keith. Meanwhile, Cardinal and Delorme's personal issues endanger their new partnership and he takes a big risk in the investigation, which puts him at odds with Dyson.
Eric prods a nervous Edie to torment their drugged and bound captive, while Delorme suspects Cardinal has sidelined her again. Later, Cardinal gets a break in the Curry case and hopes it will lead them to the killer.
The police department hopes to placate the community after the botched investigation into Katie Pine's disappearance, while Det. Lise Delorme tries to nab Det. John Cardinal in the act of committing a crime. Later, the killer stalks the next victim.