Steed's colleague Sean Mortimer comes to see him in a very confused state. He knows there is a traitor in the organization but he has been drugged to put him in an amnesiac state and he can remember little else. Mrs. Peel investigates but she too falls prey to the drug as she and Sean are abducted by bikers. It is down to trainee agent 69, Tara King, to whom Steed is introduced by spymaster 'Mother' to help him save the day.

When an agent at the Ministry of Top-Secret Information is murdered, Steed and Tara have little difficulty in locating the man responsible. But when a handwriting test indicates that he is Boris Kartovski, someone Steed thought he had killed in Berlin 5 years before, our heroes find themselves drawn into the dangerous experiments of Dr. Constantine.

The directors of the Capital Land and Development Company are being murdered and the only clues Steed and Tara have are a massive footprint and a red nose.

The death of agent Bernard Grant, while investigating the strange goings-on at the Alpha Academy where teenagers are being prepared for inter-planetary conquest, leads Steed and Tara into the generation war.

Rich men are being blackmailed by two crime experts who plant clues to them all over the scenes of the crimes that they themselves commit. However, when they try to allege that Steed would murder Tara....

It's Mother's birthday and he is visiting two of his aunts, Harriet and Georgina. To celebrate he tells them a hair-colour changing story, 'The Great Great British Crime'.

Two invincible foreign agents escape from the ultimate prison, a monastery run by the security services. They resume their mission, to kill one important person each. Steed and Tara set out to catch them, and to find out how they escaped, before their leader follows suit.