When seedy informant Harry Fuller is spotted by Regan in a pub flush with money, he knows something is up and interrogates Harry.

After their own getaway driver is killed fleeing police, a gang blackmails a young policeman into being their driver by kidnapping his bride.

The Smith Brothers, a vicious group of mobsters, abandon their usual strong-arm tactics to run a parking ticket scam at a car park.

After Danny Keever, a convict on weekend release and due for parole, is framed in a bank robbery, Regan works to clear him.

After Regan gets a tip about an upcoming robbery from a trusted informant, the gang kidnaps his daughter to blackmail him into inaction.

Regan and Carter go after Billy Medhurst, implicated in a robbery that resulted in a policeman being shot and crippled. But is the past clouding Regan's judgement?

Regan and Carter go undercover to assess corruption charges made against CID officers.

Regan tries to help out the son of a friend when the lad is implicated in an assault.

Regan is asked to help a criminal from his past, whose son has been kidnapped.

Carter winds up behind bars in an attempt to solve a jewellery robbery.

Regan and Carter get caught up in a plot to prevent a foreign head of state from getting his hands on an experimental drug to treat his heart condition.

A rich gynaecologist is attacked by a gang of villains who rob him of his suitcase.

Carter discovers that an informant was involved in the shooting of a colleague.

Regan finds himself in deep trouble when an allegation of corruption is made by the Police Complaints Department. A security van is robbed, and a guard identifies one of the robbers.

Regan discovers that successful people will stop at nothing to keep skeletons buried.

When the Superintendent finds out that there is a bank robbery in progress on a Saturday afternoon, he assigns Regan to visit an old girlfriend whose apartment is adjacent.

Regan adopts a new identity as an ex-con and goes undercover as a truck driver to expose a hijacking ring.

Regan's girlfriend has a nightmare that has similarities to a deadly incident.

Regan’s flying squad falls under suspicion after they apprehend a gang of hijackers, but a bag with 35,000 pounds in it has somehow disappeared.

Regan clashes with an arrogant police superintendent when a crime kingpin is allowed to leave the country and go to France.

After a high-powered lawyer gets three petty thugs off on a murder charge, Regan is authorized to use whatever means necessary to bring the hoodlums in.

Regan is convinced that Eddie Boyse, a recently released career criminal, is responsible for a robbery, but Boyse was with Regan when the crime occurred.

Regan gets involved in a secret government deal, thanks to Shebbeq, a Turkish cop.

How will new recruit Bob Hargreaves cope with an investigation into a violent burglary?

Regan gets involved in gangland warfare following the death of one of London’s leading villains.