Detective Constable Jack Mowbray has seen a lot of disturbing things on the job. But somehow the family man has never taken it home with him—until now. The brutal murder of a young woman in Bristol sets off a chain of events that may change Mowbray forever and tear his family apart. When the Bristol murder is linked to a series of recent killings, the investigating team grows to more than a dozen detectives and just as many petty jealousies and full-blown rivalries. Mowbray’s boss, DCS Henderson keeps the pressure on as it becomes clear that the latest killing will not be the last. Mowbray and his colleagues race to find a predator who will strike again—without apparent motive.
Episode 1
A young woman is found murdered near the city's red-light district. Her husband quickly becomes the chief suspect, but DC Mowbray has his doubts. Meanwhile, the detectives learn about the brutal murder of three prostitutes in nearby south Wales.
Episode 2
A joint investigation begins into all four murders, but questions arise over the competency of the Welsh senior detective. Another murder back in Bristol breaks all the patterns of the previous killings--and comes uncomfortably close to Mowbray's family.
Episode 3
Tensions deepen between Mowbray and his wife, as the police launch their investigation into the latest killing. The murdered woman, a student, worked part-time at a pizza restaurant, where the detectives establish a link with the first victim in Wales.
Episode 4
The police pursue a number of leads, but Mowbray strongly suspects Robert Jackson, a delivery driver with a previous record of violence against women. Mowbray's boss disagrees, however, and the detective must decide whether to charge Jackson.
Episode 5
Another victim turns up, and morale among the investigating officers hits rock bottom. The stresses of the job force Mowbray to consult a therapist, but not before his actions drive Sally away from him. Adding to the pressure, the killer strikes again.
Episode 6
Mowbray takes himself off the case, goes on leave, and tries to patch things up with Sally and the kids. While he's gone, the police make an arrest. DCS Henderson believes he has his man but needs a confession to be sure.
