A brutal murder.
When a headless corpse washes up on the bank of the Thames, DCI Tannahill Khan knows this wasn't accidental - the killer wanted the body found.
This is just the beginning.
A deadly warningThe post mortem reveals a shocking discovery.
Written on the dead man's arm is Forensic Criminologist Dr Laughton Rees' home address.
A fatal game.
With her life in danger and more bodies washing up along the river, Laughton and Tannahill are in a race against time to stop the killer before Laughton's own name reaches the top of his list
