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.

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

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

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 loses his patience with a thug he is questioning about a wages snatch, and soon the press are sniffing round for a police brutality story.

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.

While in prison, inmates Titus Oates and Colly Kibber plan a robbery.

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

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

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

The Sweeney get incorrect information from informants, allowing a gang of villains to make off with some contraband alcohol.

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.