Tony Hill is brought onto a case by Assistant Chief Commissioner Brandon, without Carol's consent, leaving them both slightly compromised. The body of a young girl has been found in a Northumberland tarn, and due to her injuries must have been killed forcefully. But the police have nothing to go on, and unfortunately for Tony, he has nothing to go on either. Much to Carol's chagrin she has to leave Tony effectively in charge of this murder enquiry to try and hunt the stalker of celebrity couple Jack and Amanda Vance, who fear they are being stalked. As the dead girls are identified as suspected runaways, the attacks on the Vance's escalate dramatically...