Newly promoted, Detective Sergeant William Warwick has been reassigned to the drugs squad. His first case: to investigate a notorious south London drug lord known as the Viper.

But as William and his team close the net around a criminal network unlike any they have ever encountered, he is also faced with an old enemy, Miles Faulkner. It will take all of William's cunning to devise a means to bring both men to justice, a trap neither will expect, one that is hidden in plain sight .