Psychotherapist Frieda Klein thought she was done with the police. But once more DCI Karlsson is knocking at her door. A man's decomposed body has been found in the flat of Michelle Doyce, a woman trapped in a world of strange mental disorder. The police don't know who it is, how he got there or what happened - and Michelle can't tell them. But Karlsson hopes Frieda can get access to the truths buried beneath her confusion. Painstakingly, Frieda uncovers a possible identity for the corpse: Robert Poole, a jack of all trades and master conman. But the deeper Frieda and Karlsson dig into Poole's past, the more of his victims they encounter - and the more motives they find for murder. Meanwhile, violent ghosts from Frieda's own past are returning to threaten her. Unable to discover quite who is telling the truth and who is lying, they know they are getting closer to a killer. But whoever murdered Poole is determined to stay free - and anyone that gets too close will meet the same fate.