The police are dealing with a bizarre case and as Michael Jardine seems to be one step ahead of his friends, it results in a tragedy that will affect everyone at the police department after they discover the truth.

A student dies when he falls from a roof at a top Glasgow school and a journalist reveals that the death is drugs related. But then the journalist is found dead. He's been having an affair with the paper's editor who becomes chief suspect. When another student dies however, the Strathclyde team discover that a psychopath is on the loose, and he's been under their noses all the time.

The discovery of the body of an underage prostitute causes Ross to go after a long time nemesis with renewed vigour. This decision sets into motion a chain of events which not only puts the Inspectors career in jeopardy but also numerous lives.

When a body is found in the basement of a burnt-out factory, Burke realises that his arson case has become much more interesting than originally thought and uses the case to test his officers. While Fraser attempts to identify the dead man, Burke and Ross pressurise their prime suspect - rival factory owner Scott Dewar