Trying to remember an episode of “The Avengers”

The lousy movie with Uma Thurman was on this morning and it put me in mind of a sequence from the old TV series that I’ve always remembered.

Steed and Peel are in a large room and they are confronted by something like a half dozen hostile guys. A door slides between them, separating them from each other. Emma is left with one guy while Steed has the remaining five. We stay with Emma and the battle that follows is a hell of a fight. It takes Emma something like five minutes to take the guy down. She then runs to the door, opens it, and to her astonishment Steed is standing there calmly while the bodies of the five guys are lying unconscious on the floor.

Does anyone else remember that episode and which one it was?

PAD