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.

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.

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

Giles Nunn and Carrie Selhurst are an upper crust couple who, partly for kicks and for the profits, commit highway robbery in lonely country lanes, along with the lower class boy Tommy Garret, whose dad is a friend of George Carter. Regan is on to them and Carrie gets arrested, but her unwillingness to cooperate leads to the death of the next victim.

An informant of Regan’s tells him about a hijack involving a lorryload of cigarettes where he will be the look-out man. But can Regan trust his snout?

Regan and Carter are confronted by a newsman with information on an unsolved robbery. And why are the pair being photographed ?

Violent criminal Vic Labbett returns to England to recover the proceeds of an earlier robbery, and Regan and Carter must stop him before he can get his hands on the loot.

Regan's snout is abducted after passing on information about a switch of some stolen diamonds. Regan and Carter must catch the villains while protecting their source.

Regan and Carter are called to a siege at a bank, where two armed robbers are holding hostages.

Regan is assigned to ensure the safe shipment of a gold bullion consignment.

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

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

Regan is fitted up by an ex-con to get his daughter's dodgy boyfriend out of the picture.

Regan must find the source of illegal guns that are flooding the market.

An armed robber is sprung from jail and comes looking for Regan.

Regan and Carter are reluctantly teamed up with a Scottish officer.

After a criminal dies during a robbery, Regan and Carter can find no leads.

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

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.

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