Steed has infiltrated a gang, led by Mason, which is implicated in Peggy's murder. Steed asks Keel to establish contact with a rival gang, and the doctor discovers that Vance's hitman, Spicer, has been sent to kill Steed.

When Keel attends a health conference in Geneva he is unaware that he is carrying, in microdot form, a vital new medical formula - unaware, that is, until he is arrested for murder.

Thanks to the clever briefing of the Lakin brothers a man charged with treason is found not guilty. Mrs Gale believes that Steed is implicated, and contacts the newspapers. Steed threatens her: either withdraw her allegations or pay the consequences. Soon Steed is on trial for Gale's murder.

Invited to spend the weekend at the home of medievel costume expert Sir Cavalier Resagne, Cathy finds herself alone in the house, pestered by a young man who claims to be a film director, and haunted by her past. And where is Steed?

An incoming missile attack, which is detected by all but one of the country's early warning stations, proves to be a false alarm. Steed finds himself attending an exclusive New Year's Eve fancy-dress party on a train. The train terminates at a remote, deserted station, and a guest is killed with an arrow.

What does Cathy joining a motorcycle gang, two elderly ladies who own a watermill and claim to be witches, and all of the clocks stopping at a local atomic research station have in common? They're all present in Brian Clemen's first great step into the bizarre.

The opposition believe Steed is responsible for the death of their agent Vinkel. Steed, however, had nothing to do with the murder and, as a show of good faith, agrees to a swap of partners with Keller in a bid to find the real killer.

Four agents have vanished, looking for each other, in Little Bazeley-by-the-Sea. Steed and Emma go in for the man who went in for the man who.... and meet the odd local landlord, blacksmith and vicar. Are they more than they seem?

When an agent is killed in the lift of Pinter's Department store, Steed and Emma get involved with King Kane, a tycoon who lives in a penthouse above the store. Why is Professor Popple, a missing atomic scientist, being held in the bargain basement?

When a group of hoaxsters called the Hellfire Club mix murder with their mischief, Steed and Emma demonstrate a few tricks of their own. The whalebone corset, high laced boots and spiked dog-collar Emma wears as the "Queen of Sin" were designed by Diana Rigg herself, and resulted in A Touch of Brimstone being banned from American TV.

According to Steed's double-agent barber, one of three military men is a traitor. But which one? To find out, Steed becomes a butler, and Emma starts Operation Fascination to trap the woman-hungry Group Captain Miles.

Emma inherits some property from her deceased Uncle Jack. The property is a very bizaarre house, and when Emma goes to inspect it, she finds herself trapped in a labyrinth of psychological torture.

When several top executives die, their secretaries take over their firms. Is it mere chance, or are women trying to take over the world? Steed employs a deadly secretary, and Emma finds sorority down at the gym.

Steed and Emma return from a party to find a dying agent in Steed's flat. What is the connection between honey, a firm which makes fantasies to order and the oil deal promised by a visiting Bavarian Prince?

Emma and Steed investigate the mystery of how top secret things are being photographed from the air. Could it have something to do with the groovy world of fashion photography and a parrot called Captain Crusoe?

When representatives of the two organizations head to a country church to investigate the sudden reappearance of a man long thought dead, Steed and Emma are called in to help. It isn't long, of course, before murder rears its ugly head.

Foreign agents are being killed, but not by British agents. Steed thinks it terribly unfair, and so does his opposite number, Nutski. They make an arrangement, and Steed and Emma find themselves with Soviet partners in an investigation of a group of very British killers.

Three Hollywood veterans, led by an insane director, decide that Emma would be perfect for their latest movie, so they kidnap her and film some surreal and deadly footage.

Steed is invited to a party, and finds himself trapped in a remote-controlled aircraft, with six fancy-dressed specialists in various combat styles, en route to a distant island. There, they are pitted against each other in a deadly test.

When Lucas, an agent investigating something subversive, gets off his train at the wrong station he is murdered. Has the crime got anything to do with a mole at the admiralty, a train ticket and a fiendish plot to kill the Prime Minister?

Invited for the weekend to the home of a fellow Bridge Expert, Emma finds herself trapped in a house designed to send her mad. Her tormentor is Max Prendergast, a man she befriended and then betrayed in Berlin some time before. Then Steed came to the rescue but now he's at home nursing a sprained ankle.

Emma's old friend, Paul Croft, returns from abroad to retire to Little Storping-in-the Swurf. Unfortunately, the village seems to be run along very strange lines. Threatened by yokels, Emma finds herself outnumbered.

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.

To infiltrate a peace conference, Arcos, a brilliant plastic surgeon, uses a new moulding technique to transform an agent into a duplicate Steed. But when the transformation proves to be unstable, Arcos decides they need the real Steed.

When agents find themselves in Colonel Mannering's interrogation centre, they think it's a test of their abilities, and relax with drinks when the sessions are over. But who's fooling who. Steed plays catch the pigeon.

Steed, attempting to capture super-spy Merlin, is knocked out by a sleeping capsule, and wakes to find London deserted and under martial law. Firing squads are at large, and a nuclear bomb is holding the government to ransom.

When one of the Acme Precision Combine is brutally stabbed, Steed and Tara are on hand to witness the crime, thanks to a telephoned warning. But why does somebody want them to see so many killings, and what does it have to do with Dr. Jaeger's aggresso-therapy clinic?

When Steed takes prime witness Miranda Loxton to a safe house to protect her from Murder-International hitmen, Tara is kidnapped. She escapes to find herself in her worst nightmare. A booby-trap in Steed's apartment kills Mother and Tara may be the only one with the hidden knowledge of where Steed has gone.

When a woman is found walking barefoot in a snowy field, complaining of a dead man who wasn't dead, Steed investigates the Happy Meadows funeral parlour, which doesn't seem to be keeping its clients down under. What connection could that business possibly have with Mystic Tours?