While trying to stop a extremist group who are trying to overthrow the British government by flooding the country with counterfeit money, Dempsey and Makepeace try everything in there power to stop them.

Makepeace poses as reporter Debby Smith to get close to hoodlum 'Marocco' Jack and ends up saving his life from a rival gang. Dempsey joins Marocco's gang by posing as an American driver called Andy Sallapuccio, whom they need to pull off two simultaneous jewel heists. Meanwhile Spikings is facing complaints from upstairs that might lead to SI 10 being shut down.

Dempsey is stalked by a homicidal woman who obsesses over him, and who hates Makepeace for being with him.

Makepeace gets injured while pursuing jewelry thieves with Dempsey. On her first day out of hospital, they run straight into a bank robbery and hijacking - and Dempsey is reluctant to put Makepeace in any kind of danger.

Dempsey and Makepeace investigate a jewel thief who has masterminded a series of robberies but his life is also under threat by his underworld rivals.

An antique dealer is murdered and priceless Egyptian artefacts are stolen. While the crooks try to find a buyer, Dempsey and Makepeace go undercover and find several parties looking to get their hands on the artefacts.

A police informant suffers a near-fatal beating and due to this Dempsey and Makepeace go on the trail of a vicious gang leader.

Once again, Dempsey and Makepeace are witness to a fellow policeman being shot. In this case it's one of Makepeace's former partners, Tom Bishop, who's dying words involve millions in cash and 'the man in the red coat'.

A boxer turned murderer who escapes a police stakeout has Dempsey on his trail trying to catch him.