Thirteen-year-old Mandy Walsh has been gunned down in the street, caught in the crossfire between rival drug gangs.

For Chief Constable Lane there is only one option - infiltrate the drug syndicates and rid his patch of this menace.

Unfortunately, Assistant Chief Constable Desmond Iles has a better idea: let the gangland police itself in return for a few ''favours''.

As his superiors battle it out, Detective Chief Superintendent takes a closer look at Mandy''s death. He learns the bullets that killed her were not fired by the warring gang. There was, it seems, a third gunman targeting Mandy...

''Comes off the page like electricity'' Sunday Times