When a faceless body is found floating in the river on a summer's morning, Detective Kay Hunter and her team are tasked with finding out the man's identity – and where he came from. The investigation takes a sinister turn when an abandoned boat is found, covered in blood stains and containing a child's belongings. Under mounting pressure from a distraught family and an unforgiving media, the police are in a race against time – but they have no leads, and no motive for the events that have taken place. Will Kay be able to find a ruthless killer and a missing child before it's too late?