As Paul Abbott's procedural saga continues, there's no shortage of fresh problems for DI Vivienne Deering and her team. The police are readying a trap for the prime suspect in the serial killer case, but their best-laid plans soon come unstuck. The long-suffering law enforcers risk their operation being derailed entirely when a notorious child murderer's new identity is leaked online, so the team have to come up with a new approach - and fast.

The fatal shooting of a respected surgeon leads the team to an unlikely suspect. Meanwhile, Dinah and Deering make disturbing new discoveries in the serial killer case, fearing it might not be over.