A charred body is found in a car, leading the team into a web of police corruption and cover-ups. Jardine, Reid, Fraser and Ross investigate.

When a man is found bleeding to death in a health club and two of the female members claim to have had intimate relationships with him, Reid and Ross uncover a world of health-obsessed women with dark and dangerous secrets. Meanwhile, Robbie Ross becomes the suspect of a corruption inquiry, and Jardine is forced to face up to his own mortality. Will Jardine's team catch the killer before he strikes again?

A therapist returns home after his late-night radio phone-in show to find his wife murdered. Jardine and the team investigate.

DCI Jardine and the team investigate a series of mysterious deaths among members of a tango club after a pre-wedding parachute jump ends in the bridegroom plunging to his death. And as Jackie Reid's wedding day approaches, Ross tries to convince her that she is rushing into marriage too quickly.