When a car crashes into a garage on an ordinary street, the attending officer is shocked to look inside the damaged building and discover a woman imprisoned within. As the remains of several other victims are found in the attached house, police believe they have finally identified the Red River Killer --- a man who has been abducting women for nearly 20 years and taunting the police with notes about his crimes. But now the main suspect, John Blythe, is on the run. As the manhunt for Blythe intensifies, Detective Inspector Will Turner finds himself fighting to stay involved in the investigation. The Red River killings hold a personal significance to him, and he must be the one to find the killer.

DI Zoe Dolan is tracking the Creeper, a stalker who's been breaking into women's homes and attacking them. Meanwhile, Jane Webster gets a call to the helpline where she volunteers. The soft voice at the end of the line says he loves these women, but it's a love that ends in blood. When Jane tells the police, it should be the lead that Zoe needs --- but it only pulls her further into a case that is already taking her dangerously close to the past she's never fully escaped.

Charlie Matheson died two years ago in a car accident. So how is a woman bearing a startling resemblance to her claiming to be back from the dead? Detective Mark Nelson is called in to investigate. Meanwhile, every year, Detective David Groves receives a birthday card for his murdered son. This year, though, the card bears a different message: I know who did it. Uncovering the facts will lead them all on a dark journey where they must face their own wrongs as well as those inflicted on the ones they love.

When a woman is found bludgeoned to death, Detective Inspector Andrew Hicks suspects a crime of passion, and attention focuses on her possessive ex-husband. But then a second body is found, and more murders arrive in quick succession. As the death toll rises, Hicks must face not only a killer obsessed with randomness and chaos, but also a secret in his own past. If he is to stop the killings, he must confront the truth about himself.