After escaping the clutches of serial killer Brian Howley, Detective Sergeant Etta Fitroy must follow his grisly clues to finally bring him to justice. However, his endgame has a terrifying twist, one that will not only change Brian's fate but the fate of everyone that Etta loves.

When her daughter, Jenny, stumbles across the body of her high school principal, Cochise County Sheriff Joanna Brady's personal and professional worlds collide, putting her in the difficult middle ground between being an officer of the law and a mother. While investigating murders means discovering unpleasant facts, Joanna isn't prepared for the knowledge she's about to uncover. Though she's tried to protect her children from the dangers of the grown-up...

After Deputy Sara Ross discovers that her ex-partner fatally shot a man during a routine traffic stop and the details do not support his story that the man had pulled a gun, Sara must follow the truth no matter where it leads in order to protect herself and her son.

Reluctantly accepting help from her ex-husband after major surgery, Detective Inspector Hazel Micallef consults on a case that eerily resembles a recently serialized publication and causes Hazel and her associates to draw links between the murder, the story, and a cold case.

While investigating the gang killing of a low-level informant, Pasadena detective Nan Vining stumbles upon clues to her own brutal assault two years earlier, as sometime-flame Jim Kissick searches for the vicious serial killer who had nearly taken Nan's life.

This time Sheriff Joanna Brady may expect to see her maternity leave through to completion, but the world has other plans when a serial homicide case surfaces in her beloved Cochise County. Rather than staying home with her newborn and losing herself in the cold cases to be found in her father's long unread diaries, Joanna instead finds herself overseeing a complex investigation involving multiple jurisdictions.

Investigating the discovery of human remains that have been frozen for a decade, DI Fiona Griffiths learns that the victim was a missing student with possible connections to Griffiths' father, a case that is further complicated by a recent murder.