When she receives a wedding invitation from one of her former patients, forensic psychiatrist Dr Claire Roget is more than a little alarmed. Highly intelligent and manipulative, Jerome Barclay suffers from a severe personality disorder. Although she has never been able to prove it, Claire believes him to be highly dangerous, responsible for at least three suspicious deaths - and she fears for the safety of his new bride.

Coroner Martha Gunn is among the first to be called to the scene when a man's body is found in a small cottage fronting the river. Floating face-down in the rising water, it appears to have been raised from the cellar by the flood.

After a scandal forces DI Kelly Porter out of the Met, she returns home to the Lake District. Crimes in the Cumbrian constabulary tend to be minor, but Kelly begins work on a cold case that shocked the local community - the abduction and brutal murder of a 10-year-old girl. 

Thirlmere hides a deadly secret... Drought hits the Lake District, uncovering a skeleton at the bottom of Thirlmere reservoir. The case quickly becomes personal for DI Kelly Porter when she discovers it's the remains of an old classmate, missing for over twenty years. Then a day later, another body is found in a caravan park, its head broken and bloody. Kelly suspects these two crimes are linked. But if she's right, that means there's a ruthless killer somewhere in her community – someone who will do anything to keep the truth buried.

DS Rakesh Siyal is an idealist. Frustrated as an Edinburgh human rights lawyer, he joins the police, determined to solve the problems he sees with the criminal justice system from the inside, rather than out. His first day as a cop sees him sent down to Galashiels in the Scottish Borders, where he’s given a simple task – return a suspect to Glasgow to face justice.