Killer Britain with Dermot Murnaghan explores British murder stories filled with detective intrigue and chilling storylines of homicide and hate. In each episode, Dermot Murnaghan recounts a case he has reported on or followed at close quarters. 

Each murder storiy is told with archived footage and key interviews from those closest to the case, including testimony from family members of the victims and the investigating officers who first arrived on the scene to witness the aftermath of the murders.