Police begin a manhunt following the seemingly motiveless killing of a teenage boy in Bristol. Detectives scour the city in search of their suspect, a hooded figure caught on CCTV feeling the scene of the crime.

Days after Nicholas Robinson's fatal stabbing, Avon and Somerset Police figure out their prime suspect, 19-year-old Luchiano Barnes.

The police have their suspect, but must race to uncover evidence as the custody clock ticks. As Nicholas's family anxiously prepare for a murder trial, have the police really got the right man?