Episode 1
Police dogs Meg and Thor are reunited with their handler Martin after he broke his leg. They track a mysterious BMW with suspected links to drug dealing.
Episode 2
Rookie Alsatian Kane has a busy night shift with handler, PC Harris, going after a burglar. New handler Nikki investigates a bomb scare with explosives detection dog Oscar.
Episode 3
In Liverpool, new recruit Chico finds a huge stash of cannabis up an alleyway, helping his handler PC Bartley disrupt a major drugs operation.
Episode 4
In Yorkshire, Alsatian Thor joins a firearms unit and storms a derelict building. Meanwhile, sniffer dog Meg raids a flat with possible drug dealing links.
Episode 5
In Yorkshire, PC Fletcher's dog Patto has been injured chasing a burglar. In Merseyside, PC Harris and his dog Kane are trying to track down the driver of a stolen...
Episode 6
PC Bartley reminisces about his first dog, who was killed in action chasing a gang of burglars. Sniffer dog Lucy is called into action when a driver is stopped.
Episode 7
PC Gayles and his dog Thor are on the hunt for evidence to convict mobile phone thieves. In Glasgow, sniffer dog Eddie carries out his first search for a gun.
Episode 8
In Merseyside PC Bartley and his dog Chico are involved in a high-speed car chase. And, new explosives detection dog Pip is at Aston Villa football ground.
Episode 9
Devastating news about PC McIntyre's Alsatian Rudi jeopardises their future together. And, can sniffer dog Meg show her skills on a suspected drug dealer's car?
Episode 10
As police surround a flat where a gunman is thought to be hiding, PC Fletcher's firearms support dog, Patto, faces a dangerous situation.