In the shadows of 1990s London, untouchable crime boss Freddie Morgan rules by fear.
Tasked with bringing him down, Detective Sergeant Mark Carter is seconded to a covert Met Police unit, whose aim is to infiltrate Morgan's heroin operation.
Backed by a fraudster-turned-informant with everything to lose, Mark knows that one wrong move means exposure and certain death. But as the undercover sting tightens, he uncovers something far more dangerous: corruption within his own ranks.
With the lines between law and crime beginning to blur, Mark is forced to confront a brutal question: who can he trust when even his own team may be compromised?
Neville Blackwood is a former senior detective, whose career spanned more than thirty years investigating some of the UK's most dangerous criminals. Drawing on his first hand experience with undercover operations, he delivers a tense, believable, and disturbingly real insight into covert policing.