Hackett and team stake out a cargo ship carrying £30,000 in silver. A tip-off from snout Ted Knight points the finger at Jack Maynard. When the stakeout is terminated, the team discover Knight with his throat slit on the dock.

Harry Skeats runs a gang of jewel thieves. During a safe breaking, gang member Rocky Wall is badly burned; he's dumped and dies in hospital. Knowing they need a new burner, Hackett bails Tim Farlow out of jail to use has bait.

Courier Pink gives Sharkey a chance to make some money by bringing Lebanon hashish into Britain. Before he can hand it to Cetti, police raid his home, leaving Sharkey in possession of half a million pounds' worth of heroin.

Criminals Dickie Tufnell and Harry Kemp are shot dead in a gangland hit. Hackett learns that the latter had been forced into the robbery by a pair of revolutionaries looking to raise funds.

Two youths hijack four lorries and beat up the drivers. Tate believes they are stealing to order. When the pair attempt to sell new TV/radio cassette players to Tyler Electronics, they cross a big firm.

Hackett's snout Collars is murdered. Inquiries lead to the release of Swain and Lewis from Parkhurst. Target criminal Ruby Daniels' daughter Sam is kidnapped and the abductors want £300,000 in cash. Hackett believes Daniels is connected to the pair.

An informer tells Hackett to go to a squash club where he will find a briefcase in a locker. Leaving, he is approached by Dep. Chief Constable Goddard. Instead of documents, there's £10,000 in cash and Hackett facing suspension.

A young runaway is found at the scene of a lorry hijacking. Down the road, a second lorry is hijacked but the driver is dead and carrying a large amount of money. Hackett suspects that girls are being used as bait and goes undercover.

Bids are being placed for a lucrative city development building project but is there an element of police corruption connected to one of them?