Invisible assassins stalk London, and DCI Rachel Carey is drawn into a case involving a rising politician that brings greater risks than she first imagines.

In the wake of a shocking broadcast hack during an interview with Isaac Turner, Carey must work out who is responsible and whom she can trust.

The net tightens. After DCI Carey is kidnapped, her instincts are proved right – but she’s in more danger than ever before, while Isaac Turner pursues his own agenda.