1/6. Six-part documentary series exploring the work of police officers across the UK, whose jobs are becoming increasingly dangerous due to the rise in knife and gun-related crimes taking place under the cover of darkness.
2/6. Kent's Armed Response Unit deals with a man thought to be carrying a gun. Police in Wrexham use new intelligence to close in on a drug dealer, while Exmouth officers meet a girl who blames her drunken antics on her breast enhancement.
3/6. Officers deal with a feisty mother from Canterbury, and the Armed Response Unit confronts two youths who are believed to be carrying a gun.
4/6. Officers deal with a violent person and a reckless driver. Documentary exploring the work Britain's police forces carry out during the night.
5/6. The Chief Constable of north Wales deals with a drunken man who is being aggressive, while Exmouth police officers strike it lucky when they arrest two drug dealers.
6/6. Police in Crewe use their persuasive powers to calm down an excitable youth, Wrexham officers rush to the aid of a colleague in distress, and policemen in Torquay help a woman who was knocked to the ground by her boyfriend.