The Avengers has dated less badly than many shows of its period, but the goofball depiction of a computer in such distress that it requires surgery – like “medical series” surgery, with clamps and forceps and masks – pretty much nails this down to the mercifully distant past. George / XR40 is an example of a visible trend in the late sixties making computers less threatening by making them silly.
We saw one of the stupidest examples when we watched Batman and practically every script that Charles Hoffman contributed had some dumb gag about the Batcomputer belching up spaghetti or something. This really isn’t much better. Maybe it could’ve been one throwaway gag in the closing tag scene. But Tony Williamson structures the entire episode around George’s surgery and brain transplant while our heroes take turns looking for a traitor and coming back to the operating room to ask “How is he, doctor?”
For the first time, The Avengers was ponderous. The only spark at all is Tara getting called in on her way to a fancy dress party and declining to change out of her cat costume and mask for the show’s first ten minutes.
Speaking of computers, there’s a reminder that language is always in flux at the very beginning and we see the word spelled as “computor” on a sign. That’s not a typo. Well into the 1960s, either spelling could be used, although I would say that by this time, a “computer” could also be used to refer to the human operator of a “computor” hardware. Some eggheads at Georgia Tech were still using “computor” in their dissertations as recently as 2001, although you really just can’t expect linguistic precision from a bunch of damn Yellow Jackets. (More here.)
On the human side, Frank Windsor, who was very well known at the time for his role of Detective Inspector John Watt in Z Cars and Softly Softly, is here as one of the traitors. It looks like this episode was made just a few weeks after production on Softly Softly‘s third series finished. Judy Parfitt and Arthur Cox also appear.