So good it was remade in the Diana Rigg era, here's the original of The Correct Way to Kill, with a much more appropriate title of The Charmers
The Outside-In Man is a crackingly spytastic story with flavours of the Burgess/Maclean/Philby spy scandal of the early 1960s, albeit faint ones
The fabulous character actors are the making of a great episode, all about two old ladies who've got something very hi-tech in their cottage
Steed and Gale mind a sheikh's horse and investigate a dodgy betting outfit in an episode that's really about toffs making sure the lower orders know their place
What connects a posh wine merchant's with a secret research establishment? And how much is a case of 1956 Chateau Lafitte anyway?
An episode set largely in a Cornwall cemetery, where people keep winding up buried even though they have no connection with the area. What's going on?
The influence of John le Carré's The Spy Who Came In from the Cold is obvious in this excellent episode, about Steed being interrogated for being a double agent
An international cabal of criminals posing as clergymen are what powers this brilliant episode. And Steed and Gale share a screen kiss – their only one
We're near the end of Mrs Gale reign on The Avengers, and in The White Elephant, set in a zoo, we get a hint as to why her character might have had enough