Reuben Maitland runs the UK's elite forensic crime squad - GeneCrime. Their work is at the cutting edge of modern crime detection, using the very latest scientific knowledge to identify, arrest, prosecute and convict Britain's worst criminals. They only work on the most high-profile of cases. They are controversial, but undeniably effective. But the hunters are about to become the hunted, and find their own techniques used in an attempt to destroy them. When one of the team is brutally murdered, Reuben does not suspect that this is the beginning of a concerted attack on the whole of GeneCrime. The first clue comes when the police discover a warning in the victim's own blood, written in the language of genetics. Someone is out to destroy GeneCrime, even if it means killing them one by one. Another team member is taken, horrifically tortured and sadistically murdered. Reuben is desperate to find and stop the killer. But as his own investigations gather steam, he finds his career attacked. Reuben used his own most advanced scientific discovery for a very personal reason and rivals in the police use this to remove him from command. Suddenly he is on the outside of GeneCrime, cut off from their resources and power. Reuben, ostracized and under suspicion, knows that he must fight this battle alone. The killing has not stopped, and the one thing that is beyond question is that he is the killer's next target.