During a lads' night out, an interaction with a stranger leads to a violent attack that leaves one of them fighting for his life in hospital. Can police track down the assailant?

Detectives suspect that a series of burglaries targeting the elderly and vulnerable might be the work of one man. CID Inspector Tom Smith must see if he can take this dangerous man off the streets.

In a spate of terrifying shop robberies, the criminals brandish a meat cleaver and knife.

In a case of home invasion by three men wielding a baseball bat, a family is subjected to a violent ordeal, late at night, in their own home. Rushing to the scene, police officers discover they have no idea why they were attacked.

When a man is found badly beaten on the side of a road with little recollection of what happened, Detective Sergeant Lee Marriner and Detective Constable Craig Weir must check all the available images to see if they can find any leads.

In Norwich, a specialist team of detectives are battling to bring down 'county line' gangs, which are flooding the city with illegal drugs brought in from beyond the county borders.

In Norfolk, a team seek evidence to help them convict two suspects in a shocking armed robbery case.

Norwich CID seek a prolific burglar who is very conscientious when it comes to leaving no traces.

After a raid on a cannabis factory, nine people are arrested and it is up to the team at Norwich CID to get to the bottom of which role each suspect played.

The team in Norwich gathers evidence about a single-punch attack that has left a man with a serious brain injury, but no willing witnesses.

Detectives are tasked with bringing down the Norfolk-based Lewis drugs gang, and in particular, the man at the top of it who oversees the selling and dealing of crack cocaine and heroin at street level.

Victims are terrorised in their home by a knife-wielding intruder, twice in 24 hours. The race is on for police to catch the hardened criminal and his accomplice before another strike.

Two men are left with serious facial injuries after being assaulted in a Grimsby pub. Police arrive to make an arrest, but a large crowd of bystanders violently intervene...

In Grimsby, a vicious mass street brawl leaves innocent victims with serious injuries. Police are thrown into a desperate race against time to find before a suspect flees the country.

A Scunthorpe household is terrorised when five masked men break in and hold them at knifepoint before stealing their car. Detectives find a used vape and a sledgehammer at the scene, which are sent off for forensic analysis, while CCTV footage captures what appears to be a getaway vehicle in the area, and before long they have arrested their first suspect. But it remains to be seen whether he will admit his role in the crime and implicate the others.

A Scunthorpe restaurant worker is stabbed in the neck with a pair of scissors in broad daylight, and while the attacker flees into a residential area, the victim is rushed to hospital with life-threatening injuries. Police discover the victim knew the attacker and soon recover the bloodied scissors from the suspect's house - but as the net closes in, the case takes a surprising turn as witnesses suggest the victim may not have been acting in self-defence.

A household is terrorised at home by five masked men who break in and hold them at knifepoint before stealing their car. Can detectives find the violent gang before they strike again?

Humberside Police are facing a rise in crimes involving knives and offensive weapons. This edition follows three investigations, revealing tactics used to fight a rise in violent crime.