Following the murder of DCI Bilborough, the hunt is on for Albie. DCI Wise takes over the investigation and criminal psychologist Fitz is brought in to defuse a potentially fatal and explosive situation.

Fanatical religious group leader Kenneth Trant discovers that his girlfriend Joanna is still alive and turns his attention to Dean, whom he trusted to dispose of her body. With Joanna hospitalised, DS Beck extracts a confession from Dean while criminal psychologist Fitz tries to get at the truth. He persuades DCI Wise to see Dean in his cell, but fears it may be too late.

The case ends with a final showdown in the group's church, where things reach a destructive conclusion.

DS Penhaligon tracks a serial rapist who revels in his crimes, but during the course of her investigation she becomes a victim herself, which inevitably changes her relationship with criminal psychologist Fitz. When his wife returns, his life is thrown into even more chaos.

The police catch Floyd but criminal psychologist Fitz is unable to make a breakthrough before he has to be released due to lack of evidence. Floyd's audacity grows as he phones Fitz on his radio show asking how a rapist should cover his tracks.

Fitz exposes the savage price of racism as he digs deeper into Floyd's past. As the investigation reaches a climax not one, but two, victims seek revenge.