A professional hitman bursts into the luxurious family home of accountant Keith Rothwell and shoots him in cold blood. Banks is instantly struck by the strange reactions of the victim's family and evidence comes to light that Rothwell has been living a secret double life. Now investigating the murder of a victim with two identities, Banks and Morton discover a possible link to a major money-laundering operation and are plunged into a high-profile fraud investigation with political ramifications.

Frustrated that a number of cases have been knocked back by the Crown Prosecution Service, Banks and the team are called on to investigate the murder of teenager Ellie Clayton, daughter of a high-profile internet entrepreneur. The victim's background, together with the suggestion she may have been raped, means the incident is soon the subject of much media speculation, and strong evidence implicates a theatre director who ran a drama workshop the girl attended on the night she died. The detective believes he has found his man, but Morton fears her colleague isn't seeing the bigger picture.