DCI Gabriel Markham and his team are working to find a serial killer, when a break in the case leads them to a potential culprit. Gabriel is torn between his conviction and the evidence found at the last murder scene.
Gabriel comes face to face with the prime suspect, but his deep and personal connection to the case could see him jeopardizing his career. As a dangerous game of cat and mouse ramps up to a shocking climax, Gabriel begins to lose control.
When Gabriel publicly denounces the acid murderer during a press conference, the killer's sights turn towards him and the tension ratchets up as the hunter becomes the hunted.
The story of the murderer's first victim is revealed as another suspect enters the frame. Gabriel receives some help in his investigation from an unexpected source - but is the situation more complex than it seems?
With the net tightening, a thrilling chase of twists and turns ensues, and as Gabriel begins to piece together the trail of violence leading to the killer, he ends up putting at risk everything he holds dear.
