Vigilante justice carried out by the police. A terrified witness with nowhere to hide.

Three brothers are executing criminals who have escaped prosecution on technicalities. They have remained undetected until Mike Hendy accidentally witnesses their latest brutal murder.

Mike discovers that the killers are police officers, they know who he is and they are watching his every move. As he struggles to decide who he can trust and where he can turn, DS James Ripley and DC Coffey might be his only hope, but their investigation unearths an even bigger conspiracy that sets off a chain of events with shocking repercussions.