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 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.
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.
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.
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. Steed awakens one morning somewhat the worse for drink, when a phone call advises him to check the morning paper; the police are tracking a hit-and-run driver. Steed checks his car. It is damaged, and the front is covered with dried blood.Watch Now:Amazon
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 a couple of thugs, who kidnap Carol. So is Preston's scheming wife, eager to get her hands on the one hundred thousand pounds hidden somewhere in the sewers.Watch Now:Amazon
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, Keel needs a minor operation - but the anaesthetist has tampered with the oxygen.Watch Now:Amazon
Morse investigates the murder of Trevor Radford, managing director of the family-owned Radford's Brewery, who was attacked and killed while working late. Morse becomes immersed in the implications of a hostile take-over bid by another company. Then Helen Radford goes to the brewery to look for her missing husband Stephen and finds him also murdered.Watch Now:Amazon
For years after her father's disappearance, the beautiful Miss Mary Morstan receives anonymously every year one large and valuable pearl. When, finally, an invitation arrives to meet the mysterious pearl-giver, Mary Morstan seeks Holmes's advice, and he begins to unravel some remarkable clues, including a poison dart and a man with a wooden leg. What Holmes finds is an old soldier who is determined to punish those who betrayed him and his friends by stealing their oriental treasure.Watch Now:Amazon
Holmes and Watson are called in to deal with a blackmailer. A dazzling young lady is about to be married, and Charles Augustus Milverton, the slithery king of all blackmailers, has letters she wrote to another man. Watson is astonished when Milverton calls at Baker Street at the invitation of Holmes, who has a plan to thwart him. As ever, things are not quite as they appear to be.Watch Now:Amazon
On a visit to Wisteria Lodge, Scott Eccles gets a strange reception. A mysterious note arrives for his host, Garcia, and the next morning Garcia and his servants have vanished without trace. Eccles consults Holmes, who decides to treat the case as a murder investigation, but it appears that Holmes and Watson are on a wild goose chase.Watch Now:Amazon
American heiress Henrietta Doran (known as Hatty) marries Lord St Simon, but she vanishes without trace on her wedding day, leaving London agog. Later, the police find her wedding dress in the Serpentine, a lake in a London park, with a note in the pocket of the dress. While investigating the case, Holmes suffers from nightmares, which he sees as a factor in the mystery.Watch Now:Amazon
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.Watch Now:Amazon
Gerald Overton is an ambitious politician with the tough job of cracking violent crime. But a chance encounter with a beautiful woman at a dinner party leads him into a nightmare, and his whole career is threatened... Gerald surprises himself when he decides to take the law into his own hands.Watch Now:Amazon
A man involved in a car crash is found to have fifty thousand pounds worth of diamonds in his stomach. Steed investigates the man's joke shop, Big Laugh, and then the offices of multi-millionaire Litoff. The burial of one of Litoff's Great Danes is not quite what it seems.Watch Now:Amazon
Holmes is called in to investigate a murder. Lady Brackenstall says she saw a gang of men kill her bullying husband, Sir Eustace, but on Holmes's arrival the case seems to have been solved. Holmes is uneasy and returns to the scene of the crime, where he finds things are not as they appear to be. And Watson is curious to hear about the lady's love affair with a sea captain during a long voyage...Watch Now:Amazon
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 Deacon and, with the aid of Dr. Keel, stops two thugs from seriously wounding de Willoughby. They set a trap for the Deacon and the lovers.
Morse investigates murder on hallowed ground. A quiet country church is an unlikely setting for the killing, and a Vicar and his voluntary helpers are the unlikely suspects. Among them is Ruth Rawlinson, whom Morse is attracted to. Then it appears that a serial killer is at work.Watch Now:Amazon
Shareholders in Anderson's, a small-arms manufacturers, are being killed one by one whilst a tycoon plans a take-over. Rifles and other weapons, possibly manufactured by Anderson's, are being smuggled into Africa. Cathy Gale joins the board with a 20 per cent share in order to investigate.Watch Now:Amazon
Walter is a vain writer and publisher with a wife and a mistress, based in London, and he likes to show off. He stages a story-writing competition, with a £5,000 prize, to find the plot for a perfect murder...Watch Now:Amazon
Edward Boyle and George Balsam are newcomers to crime, respectable businessmen on the brink of bankruptcy, who join forces with Meakins, a professional criminal, to rob a bank. They tunnel under the bank's vaults, burrowing through the earth like moles... but their plan comes unstuck.Watch Now:Amazon
Steed and Cathy eat at a Chinese restaurant, but, as ever, it's not just for fun: Steed suspects the owner, Mr Lo, of gold smuggling. He also seems to be allied with Army types who are smuggling ammunition to support ex-servicemen.
Roger Ashburn is a young hospital doctor with a beautiful but selfish wife. They hold a dinner party for Steve and Carol Hutchins, but the party is ruined when one of the men finds his wife's wedding ring in his dinner - her ploy to signal that the marriage is over.When Roger's wife disappears, he is desperately worried - but there is a surprise in store for him.Watch Now:Amazon
Parnell is an art dealer who plans to steal an important picture from his own London art gallery. During a ceremony to unveil The Patrician Lady (a masterpiece on temporary loan) gun shots and an explosion suggest a robbery. Afterwards, surprisingly, The Patrician Lady seems to be unharmed, but then Parnell finds the name 'Zarchetti' stamped on the back of the canvas, suggesting the picture is a fake. With the original under suspicion, Parnell plans that his artist girlfrend will then forge copies of the painting, which he can sell to several of his collectors who will each pay a good price for what appears to be the real masterpiece. But something goes wrong with the plan...Watch Now:Amazon
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.
A burglar steals two gold-plated eggs from Dr Ashe, not knowing that they contain a deadly virus. The man quickly falls ill, but refuses to indicate where the case containing the eggs is buried.
The Marfia aren't about to let Steed get in the way of their lucrative drug-smuggling operation between Britain and North America, and arrange for him to be assassinated. Steed survives, and tracks his intended killer to a circus, where some of the clowns prove to be anything but figures of fun.
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?
Steed is entrusted with the safe-keeping of a new fuel formula when its inventor is found in a coma. The scientist had been involved in a black magic circle which leads Steed and Cathy into the world of hexes and magic powers.