

Where to Watch Series 4
26 Episodes
- The CybernautsE3
The CybernautsThe Avengers investigate a series of murders of Corporate men, who have all been bidding on a new circuit element. Each one of them seems to have been killed by a powerful Karate blow, so Mrs. Peel visits a Karate Dojo, Steed's inquiries lead him to United Automation, where ex-Ministry scientist Dr. Armstrong is working on an electronic brain, not to mention cybernetic men. - Castle De'athE5
Castle De'athWhy have all the fish vanished from the Scottish coastline? Does it have anything to do with a dead frogman, found stretched as if on a rack? Steed and Emma think so, which is why they're guests of Ian, the 35th Laird of Clan De'ath, and in danger of being caught by the gillies. - The Master MindsE6
The Master MindsGovernment minister Sir Clive Todd is wounded as he and other ministers try to steal top secret documents. He has no idea why he did it and hypnosis is suggested. All concerned belonged to a club for people with high I.Q.s called RANSACK, who are about to meet at a school. The Avengers join the club in order to expose the mastermind behind the next heist - the theft of a plane from an R.A.F. base. - Too Many Christmas TreesE13
Too Many Christmas TreesSteed has been having bad dreams involving Christmas trees and a man dressed as Santa Claus. At a party given by publisher and Dickens fan Brandon Storey, two telepathic spies attempt to read Steed's mind and make sense of the dream. However, the dream is echoed exactly by the events of the party, enabling Steed to spot the villains in advance and identify the dangerous Santa. - The Girl From AuntieE17
The Girl From AuntieSteed returns from holiday to find that a quite different Mrs. Peel is inhabiting his old friend's flat. With the aid of actress Georgie Price-Jones, he discovers that Art Incorporated and the Arkwright Knitting Circle are doing more together than just sharing needles. - A Touch of BrimstoneE21
A Touch of BrimstoneWhen 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. - The House That Jack BuiltE23
The House That Jack BuiltMrs. Peel is bequeathed an old house by an uncle Jack, whom she never knew existed. In the event, he did not exist. The house is a former lunatic asylum and it is all a ruse by a vengeful ex-employee of Mrs. Peel's to submit her to mind games which will drive her insane.