Episode 1
John Drake is assigned to investigate the murder of a banker, Frank Delroy. The trail leads Drake to the home of Delroy's lady friend, a small seaside resort (Portmeirion) where he recovers five million dollars and solves the murder of Delroy.
Episode 2
John Drake flies to Paris, where his assignment is to find an international killer. He refuses to assassinate the man, but undertakes to retrieve him. The task becomes more difficult when Drake finds himself handcuffed to a young woman, Lisa Orin.
Episode 3
A blind young woman, Josetta, is the only one who can identify her brother's killer. John Drake has the task of helping her to find and identify the killer.
Episode 4
John Drake flies to the Arabian desert to investigate stories of slavery and finds himself befriending a Muslim lad and helping a stranded showgirl who believes Drake to be a slave broker.
Episode 5
At the request of an old enemy, Drake takes charge of security as the President of Boravia and his wife visit London.
Episode 6
When a dazed girl is found wandering along a country lane, dressed only in her pajamas, Drake discovers a plot to assassinate a Balkan President.
Episode 7
When Drake is shown a photograph of a young girl who is the victim of drugs, he sets out for the Middle East to break up the ring supplying opium. He is aided by an American agent, Sandi Lewis. Together they trace the source of the drugs, with the help of a courageous little man.
Episode 8
When the daughter of a wealthy industrialist is kidnapped, Drake impersonates her crippled father in an attempt to save her without having to hand over crucial designs.
Episode 9
John Drake has to impersonate a prisoner who has just been released after serving a sentence for bombings. His assignment is to infiltrate a group of IRA commandos.
Episode 10
Drake flies to a small Caribbean State to investigate the apparent suicide of an American economics expert, he uncovers a plot to obtain large sums of money, and in return he nearly loses his life.
Episode 11
When someone is leaking information from the American Embassy in Vienna, Drake is called in to investigate when the finger of guilt points to the Ambassador.
Episode 12
When a young, beautiful refugee pleads for political asylum, Drake is called in to investigate by his superior, Hardy. When the girl's sister arrives, Drake has a double problem to solve.
Episode 13
Drake's assignment is to find a double for James Carpenter, an American who is confined to the US Embassy in a Caribbean city. Finding the double is only half of the problem. Substituting him under the eyes of the police is the other.
Episode 14
Drake travels to Kashmir in Northern India to seek out Noel Goddard, a former executive in the Indian Government, now a traitor. On identifying Drake, Goddard is given the message: 'John Drake. NATO agent. Eliminate.'
Episode 15
John Drake flies to the Caribbean to aid an American journalist who had been arrested on a spy charge, but before he can effect a rescue is accused of the murder of a young nightclub singer.
Episode 16
John Drake is flying back to the mainland with two prisoners, when his plane crashes in the sea, near a tiny island. On reaching the island Drake finds himself a wanted man as the island's hermit owner believes Drake is an escaped prisoner.
Episode 17
Hardy assigns Drake to fly to the Middle East to find Vanessa Stewart, a beautiful girl wanted for espionage. Posing as a Baltic agent, Drake persuades her to accompany him before the British find her. A subplot comments drily on the ethics of espionage.
Episode 18
Drake is assigned to investigate the murder of a young G.I. in Munich. He was last seen in the company of a young German girl, Vicki. Was she involved in the plot? Drake, posing as an American soldier, must find the answer.
Episode 19
When several prominent people are killed, there appears to be no connection. But John Drake's investigations uncover a murder ring, which he hires to kill himself.
Episode 20
While vacationing on the Riviera, John Drake recognises a professional assassin. He succeeds in replacing the killer and undertakes an assignment working in the dark, as he has no idea who his victim is.
Episode 21
John Drake's assignment takes him to a small island off the coast of Brittany. He must protect Lady Lindsay, widow of a British diplomat, and her two young sons, from two killers.
Episode 22
When a Chinese businessman is murdered, a young couple on honeymoon become the prime suspects. John Drake flies out to the Far East to assist them, and finds himself in a dangerous situation.
Episode 23
John Drake travels to the Scottish Highlands when the fingerprints of a stolen car belong to a master spy believed to have been killed ten years earlier.
Episode 24
Drake's latest case is to unravel a security leak. The suspect is Ruth Mitchell, an interpreter; but as Drake later discovers, the girl has been used without her knowledge.
Episode 25
A plane crashes off the coast of Sicily and a diplomatic satchel is taken by mountain bandits. John Drake's task is to recover the stolen property, for which he enlists the aid of one bandit's girlfriend.
Episode 26
Drake travels to China to investigate the disappearance of an eminent doctor who had been trying to escape the Communist regime.
Episode 27
NATO agent Tony Costello is killed in a car crash while investigating a case of gun running. John Drake flies to Sicily to investigate and finds Costello's girl friend who is convinced it was murder. Before the case is solved, Drake discovers that you can bury the dead more than once.
Episode 28
When Paul Jason of Jason's Airlines is killed and several of his planes crash, John Drake assumes the identity of a hard drinking pilot to investigate the crash. Drake discovers a case of smuggling and finds himself in a tricky situation.
Episode 29
When several workers at an atomic energy plant in North Africa fall ill, a leakage is suspected. Drake flies out to investigate and is aided by a beautiful European doctor, but when the next victim has no connection with the plant, Drake discovers a fiendish plot.
Episode 30
Drake joins forces with a European doctor when workers at an African nuclear power plant fall ill.
Episode 31
Drake travels to Venice to investigate the case of Beth Warren, a cipher expert at the American Embassy in London. She disappeared form her job, and rushed to Venice to be with her boyfriend when his brother way dying. But Drake discovers she is being used for the knowledge she has.
Episode 32
Drake travels to Hong Kong to investigate the murder of a sound technician working for a radio station. He uncovers a plot where the secret information is being sent out in code over the air, transmitted as part of the station's English lessons.
Episode 33
Drake poses as a professional assassin in an attempt to prevent the assassination of a South American President. He joins a revolutionary group who are planning to kill the President.
Episode 34
John Drake travels to a Balkan country to investigate the misappropriation of funds by a Minister. Drake uncovers the plot. Involving love, politics and revenge.
Episode 35
A miniature submarine is wrecked off the coast of a South American country. John Drake's assignment from British Intelligence is to blow her up. Disguised as a fisherman, Drake races against time to find the submarine before the agents of a foreign power can.
Episode 36
When twenty five million dollars in forged currency floods the European capitals, John Drake is assigned by U.S. Intelligence to trace the source. The trail leads to an ex-Nazi General staying at a lake-side hotel in the mountains. Drake faces death before he can solve the case and uncover the secret of the lake.
Episode 37
Drake travels to the Arabian Desert to rescue the American Consul and his family from terrorists who have assassinated the King. On arrival Drake finds he has additional problems trying to protect a pretty Scots nurse and the baby in her care - the future king.
Episode 38
Hardy assigns Drake to investigate when the entire research team working in tropical diseases is killed by mysterious accidents. Drake travels to India, and uncovers clues that one of the scientists may be alive.
Episode 39
When a wave of terrorism in the African jungle is likely to lead to a mass uprising, The Danger Man takes on the disguise of a 'gun-runner' in an attempt to penetrate the extremist organisation behind it.
