On 9 October 1986, nine-year-olds Nicola Fellows and Karen Hadaway went out to play on their Brighton estate. They would never return home; their bodies were discovered the next day, concealed in a small clearing in a local park. This devastating crime rocked their close-knit community and the whole country.

Following the investigation moment by moment, drawing on exclusive interviews with officers charged with catching the killer, former senior detective Graham Bartlett and bestselling author Peter James tell the compelling inside story of the murder hunt and the arrest of local man Russell Bishop. The trial that followed was one of the most infamous in the history of Brighton policing - a shock result saw Bishop walk free. ‘Not guilty.’

Three years later, Graham is working as a junior detective in Brighton CID. A seven-year-old girl is kidnapped and found wandering naked on the freezing South Downs. When Bishop’s name comes up as a suspect, it’s clear history had come close to repeating itself. With the law and science against them, the police are frustrated that, still, he would escape justice for the double murder.

Decades later detectives are handed a surprise second chance. Can Bishop finally be made to answer for his horrendous crimes?