A rumour on the streets. A courier caught in the act. Somewhere in or close to Exeter, someone is making guns and selling them on the black market. Someone secretive enough to cover his tracks by any means necessary and ruthless enough to kill without compunction.

DS Pete Gayle and his team must work with the National Crime Agency to catch him before he can spread any more death and destruction across the streets of the UK's major cities as well as closer to home. But how can they track down a ghost who works in the shadows and leaves no witnesses when all they have to go on is a cryptic nickname?