On a remote hilltop near Newbury, PC Lucie Gray and Sgt John O'Donovan come under attack after being called to an old hanging post after a report of drunk driving, while in Hyde a suspect bites a police dog and attacks its handler.
On Anglesey, PC Mark Lee fights for his life after a driver deliberately runs him down and leaves him for dead, while a Wiltshire officer tries to persuade a violent man to hand over his distressed baby.
It takes three officers to handcuff a knife-wielding man in Bedford, a policeman in King's Lynn is knocked out cold after a pubgoer launches an unprovoked and shocking attack, a wanted youth in Bradford decides not to come along quietly.
PCs Ben, Launa and Rafal are called to a house in Islington, but find a knife-wielding man intent on wreaking havoc. In Hackney, PC Carroll happened across a street mugging, but when she gave chase the attacker suddenly produced a knife.
