Valentine's Day, and a dispute between rival gangs escalates into bloody violence. One teenage girl dead is left dead, another injured, and a police officer iscaught in the crossfire. Detective Inspector Charlie Resnick, nearing retirement, is hauled back to the front line to help deal with the fallout. But when thedead girl's father seeks to lay the blame on DI Lynn Kellogg, his colleague and partner, Resnick finds the line between personal and professional dangerouslyblurred.