PC Davey and his dog Bacca face a knife-wielding man. In London, a routine car stop late at night turns into a life-threatening incident when the driver jumps in his car and drives off with PC Nick Morley left clinging to the car door.
A late-night patrol pulls over a man suspected of driving under the influence, but they soon find themselves dealing with much more. Meanwhile, officers responded to an emergency call by residents on an estate.
Friday night in Southampton turns violent, and Sergeant Tucker finds himself isolated, and floored by a sucker punch. In County Durham, PC Caryn Fairburn is on shift when she and her colleague are asked to respond to an argument.
In North Wales, police en route to a call out are flagged down by a member of the public who alerts them to a confrontation between drunken youths on a nearby car park. Officers in North Yorkshire have to deal with a violent bystander.