Merseyside Detectives: The Murders of Ashley and Olivia

Arrests are made over nine-year-old Olivia's killing, but no one's talking. Ashley Dale's phone reveals her boyfriend's feud with a gang leader.

The net tightens in the Ashley Dale murder hunt. But can police persuade a key witness to reveal vital details of Olivia's shooting?

A vital connection linking the four suspects in Ashley's death is revealed. Olivia's case goes to trial. But will the suspect turn up for sentencing?