Sinister real-life crimes from across the UK are re-explored through CCTV footage, police files and accounts from those directly involved in solving the case.
In 2013, when Detective Superintendent Martin Brunning was called to the scene of a man's body, dumped in a ditch, he was in a race against time to catch one of the UK's most notorious female serial killers, as she went on a killing spree.
Detective Superintendent Mark investigates a brutal vengeance crime committed brothers on their brother. Culminating with video footage as one of the murderers takes the police into the woods to show them where the body has been buried.
Detective Chief Superintendent Gull was faced with five young murdered women are found in the Suffolk countryside. The ensuing manhunt becomes an international media circus as he is leading the hunt for one of Britain's most notorious serial killers.
In 2007, Detective Chief Inspector Howard investigates two women's bodies found in canals in UK and Holland eleven years apart. Meanwhile the suspect was already in prison for the violent attack on another woman, and was due to be released.
