In a remote sea loch on the west coast of Scotland, a fisherman vanishes without trace. His remains are never found. A young man jumps from a bridge in Glasgow and falls to his death in the water below. DS Max Craigie uncovers evidence that links both victims. But if he can't find out what cost them their lives, it won't be long before more bodies turn up at the morgue... Soon cracks start to appear in the investigation, and Max's past hurtles back to haunt him. When his loved ones are threatened, he faces a terrifying choice: let the only man he ever feared walk free, or watch his closest friend die...