Greenwich, south-east London. Detective Inspector Jack Caffery - young, driven, unshockable - is called to one of the most gruesome crime scenes he has ever seen. Five young women have been ritualistically murdered and dumped on wasteland near the Dome. Subsequent post-mortems reveal a singular, horrific signature linking the victims. Soon Caffery realises that he is on the trail of that most dangerous offender: a serial killer. Beset by animosity within the police force, haunted by the memory of a very personal death long ago, Caffery employs every weapon forensic science can offer to hunt him down. Because he knows that it is only a matter of time before this sadistic killer strikes again ...