Too Many Christmas Trees is The Avengers episode that families sat down to watch on Christmas Day 1965. It's perhaps the best episode ever made
John Steed's spitting image turns up to complicate things in Two's a Crowd. Or is Steed impersonating someone who just looks very like him?
If you prefer the out-and-out fantastic "spy-fi" side of The Avengers, Man-Eater of Surrey Green is the episode for you