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.

Quattro agenti sono scomparsi cercandosi a vicenda a Little Bazeley-by-the-Sea. Steed ed Emma si mettono alla ricerca dell'uomo che è andato alla ricerca dell'uomo che....

Quando un agente viene ucciso nell'ascensore dei Grandi Magazzini Pinter, Steed ed Emma vengono coinvolti da King Kane, un magnate che vive in un attico sopra il negozio. Perché il professor Popple, uno scienziato atomico scomparso, è tenuto nella cantina delle occasioni?

Quando un gruppo di imbroglioni chiamato Hellfire Club mescola l'omicidio con le loro malefatte, Steed ed Emma dimostrano alcuni loro trucchi. Il corsetto di stecche di balena, gli stivali alti allacciati e il collare a spillo che Emma indossa come "Regina del peccato" sono stati disegnati dalla stessa Diana Rigg e hanno portato A Touch of Brimstone a essere bandito dalla TV americana.

Secondo il barbiere doppiogiochista di Steed, uno dei tre militari è un traditore. Ma quale? Per scoprirlo, Steed diventa maggiordomo ed Emma avvia l'operazione Fascination per intrappolare il capitano del gruppo Miles, affamato di donne.

Emma eredita una proprietà dal defunto zio Jack. La proprietà è una casa molto bizzarra e quando Emma va a visitarla, si ritrova intrappolata in un labirinto di torture psicologiche.

Quando muoiono diversi alti dirigenti, i loro segretari rilevano le loro aziende. È solo un caso o le donne stanno cercando di conquistare il mondo?

Steed ed Emma tornano da una festa e trovano un agente in fin di vita nell'appartamento di Steed. Qual è il legame tra il miele, una ditta che produce fantasie su ordinazione e l'affare del petrolio promesso da un principe bavarese in visita?

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?