How has a research centre developing radiation-proof material managed to irradiate one of its scientists? Once more, Steed submits himself to scientific testing.

An experimental vaccine is stolen, and the subsequent test proves deadly. Steed and Keel, suspecting that the human ‘guinea pig’ did not die directly from the vaccine, volunteer to be…

An unusual and sprawling tale of heart disease, industrial unrest, and a consignment of rotten bananas.

A visit to London to sign an oil treaty from a monarch whose life is under threat brings Steed and Keel into the world of dissidents and assassinations.

The discovery of the body of Schneider, a wanted Nazi war criminal, deep-frozen in a consignment of meat at London docks brings Steed and Keel into the shadowy world of…

Top-secret information is finding its way into the wrong hands, and the source seems to be a south coast fairground. Steed succeeds in getting hypnotised and winds up in the…

Dr Keel, treating the victims of a cyclone struck Mexican village, uncovers a number of food-poisonings; emergency cooking oil is, in fact, hydraulic fluid.

Keel, called to deal with a man seriously injured by an accident, quickly discovers that the man is suffering from gunshot wounds, and that he may be implicated in a…

Keel is asked by the improbably named Bunty to help her find her missing friend. What is the connection between the department store where the women work and a call-girl…

After an unsuccessful murder attempt against Sir Wilberforce Lungi, Steed asks Keel, an old friend of the pro-Western African leader, to investigate Lungi’s secretary, Jacquetta Brown. Meanwhile, Steed flies to…

An agent has been killed at the secret dockyard where submarines are built. Steed investigates, and finds that a foreign spy has been arranging ‘accidents’ for him.

To stop his daughter seeing suspected conman Jeremy de Willoughby, Sir Thomas Waller has hired arch-criminal the Deacon to ‘put the frighteners on’. Steed is on the trail of the…

Steed is trying to track down the organisers of a group who offer to spring any convict – even the dangerous ones – from prison if they’re paid the right…

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…

Frank Preston is released from prison and is intent on reclaiming the hidden proceeds of his robbery. So is Steed, who has been ordered to follow the man. So are…

Steed trails a blackmailed civil servant to Brinkley House, a private zoo, only to observe the man throwing a package of money into the reptile pit. The package soon vanishes….

Dr. Keel resuscitates Elaine Bateman, the owner of a ballroom dancing school who has narrowly survived a murder attempt by gassing. When he returns to the school after dropping his…

Steed, investigating a number of probable arson cases, is led to the hairdressing salon of Olive and Jacques Beronne. He asks Keel to let Carol investigate the salon, but after…

Keel, reviving a young woman who has jumped into the Thames, is led to the Radeck State Circus, where the trapeze girl is guarded, her face covered by bandages because…

Steed, attempting to break a gang of international diamond smugglers, is living in a bungalow near Heathrow Airport which was once owned by a suicide whom One-Ten suspects of involvement….

Dr Keel is asked to help in the search for a man who has picked up a radioactive isotope, not knowing that it will quickly kill him and harm anyone…

A young girl, Carmelite Mendoza, has been kidnapped from a Caribbean island, but Steed suspects a political motive. His suspicions are confirmed when Vasco, the Mendoza family retainer, is observed…

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…

Steed impersonates Riordan, a forger soon to be released from prison, and gains the trust of gang-leader Hooper. Things seem to be going well until Hooper’s second-in-command, known as the…

Keel receives a ‘phone call from one of his patients, and ends up assuming the identity of her missing husband, a scientist engaged in secret research. Shot in the chest,…

Following the death of his fiancee Peggy at the hands of heroin smugglers, Dr David Keel vows to track down the killers and avenge his lost love. He is aided…

After being condemned by the Commonwealth for its apartheid regime, South Africa left and became a republic. A range of South Africans express differing views on the situation, ranging from…

Baffled by a series of armored car robberies, Scotland Yard calls in he Supercar team, but when Dr. Beaker decides to take the wheel for the next delivery, he is…

Pretending to be a reporter, Masterspy manages to steal the secret plans for Supercar, or so he thinks. Mike has actually allowed him to steal a tracking device that will…

When engine trouble forces Supercar to land in the African jungle, the first night goes well until Mike and Dr. Beaker wake up to find Mitch missing.

When the team uses a newly-acquired movie camera to document Supercar’s abilities, the film accidentally falls into the hands of some spies, so Mike and crew have to fly to…

The Supercar team goes to Kirikan, an isolated kingdom in southern Asia, on a mission to deliver medical supplies to save a prince’s life, but their efforts are thwarted by…

When a typhoon forces Supercar down near an island temple guarded by Ho Meng, the man thinks it is some kind of dragon until his daughter is kidnapped and he…

Mike takes Supercar deep into the ocean to rescue scientists trapped in a bathyscaphe on the sea floor.

Forced off course on its way to the South Pole, Supercar is forced to land in the ruins of an ancient city, where its passengers discover the secret hideout of…

Mike and Beaker help a history professor excavate an underwater cavern, but they are unprepared to encounter a stolen safe full of money and a falling statue.

While Dr. Beaker is on vacation in Ireland, two men kidnap a girl and force him to call Mike Mercury for help.

On a test dive to the sea floor, Supercar has engine trouble and then becomes entangled in the cable of an unexploded mine.

Jimmy has a dream in which he and Mitch use Supercar to rescue a princess.

When a painting he just bought is stolen from Dr. Beaker, he discovers that it contained a clue to the secret hiding place of a forger’s plates for printing counterfeit…