Detectives investigate after a violent attack on a group of friends on a night out leaves one of them critically injured and fighting for his life in hospital. Tracing the culprits is going to be no easy task as the fight was caught on CCTV, but from too far away, and police must now piece together all the clues they have to try to find out who was involved, and build their case.

Gangs are flooding Norwich with drugs brought in across the county borders. Hunting the head of the gang, a specialist team gather evidence and make an arrest - but is it the right man?