While consulting on the murder of housewife, who was hiding a shocking secret, brilliant psychotherapist Frieda Klein is brought closer to a serial killer who has long escaped detection and wonders if she is solving both cases or if she just the victim of her own paranoid, fragile mind.

The rotting, naked corpse of a man is found amidst swarms of flies in the living room of a confused woman. Who is he? Why is Michelle Doyce trying to serve him afternoon tea? And how did the dead body find its way into her flat? DCI Karlsson needs an expert to delve inside Michelle's mind for answers and turns to former colleague, psychiatrist Frieda Klein. Eventually Michelle's ramblings lead to a vital clue that in turn leads to a possible identity....