Det. Supt Hackett and his 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 stake out is terminated they discover Knight with his throat cut on the dock.
Harry Skeats runs a gang of jewel thieves. During a safe breaking Rocky Wall is badly burned. The gang dump him and he dies in hospital. Knowing they need a new burner, Det. Supt. Steve Hackett gets Tim Farlow out of jail to use has bait.
Courier Pink gives Sharkey a chance to make some money by bringing package of Lebanon hashish into Britain. Before he can hand it to Cetti, police raid his home. Sharkey finds he is in possession of half a million pounds worth of heroin.
Dickie Tufnell and burglar Harry Kemp are shot dead, at his home, in a gangland hit. His twin Roland wants revenge. Det. Supt. Hackett learns that Kemp had been forced into the robbery by a pair of revolutionaries looking to raise funds.
Two youths have hijacked four lorry's and beat up the drivers. Supt. 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 who shoot the pair dead.
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 they want £300,000 in cash. Hackett believes Daniels is connected to the pair.
An informer tells Supt. Hackett to go to a squash club where he will find a briefcase in a locker. Leaving he is approached by Deputy Chief Constable Goddard. Instead of documents, there is £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 driver Hawley is dead and carrying a large amount of money. Hackett suspects that girls are being used has bait and goes undercover.
