[MrMcCall]

Mensa makes me think of two things:

Groucho's quote "I'd never be a member of any club that would have me as a member."

And one of our favorite Columbo episodes (all free on Tubi) that features a murder in a very Mensa-style club, titled "The Bye-Bye Sky High I.Q. Murder Case".

[JKCalhoun]

Yeah, the antagonists in Columbo are always "elitists" ... at least by the standards of the time of the shows.