There are probably less than a dozen connections between ‘Columbo’ episodes, most of those references to past episodes like “Candidate For Crime” and “Troubled Waters”. But there are a few others that are inferences to past episodes. For instance, in “The Most Crucial Game”, it is my contention that Lt. Columbo heard a replay of the symphony performance which proved to be the last one conducted by Alex Benedict.
And we have another such inference here which I can theorize to be a connection between both episodes.
“A CASE OF IMMUNITY”
I think that it was a looping tape playing both in the legation and in the bar, playing the same tune by an unknown Suarian musician.
Also, I like to think that Louie the bartender, whose last name was never revealed, was of Suari descent, probably a first generation American son of immigrants. He was known as Louie in his American identity, but his Suarian parents may have given him the name لويس or لؤي as his birth name.
But I'm not going to go the "King Ralph" route and claim that retired cop/natural schlub Louie the bartender is related to King Ahmid Khamil, no matter how distantly!
I wonder if there have been any fictional DNA testing companies which have shown up in Toobworld?
*For those who never saw ‘Columbo’ in its original broadcast and who are accustomed to seeing it on a daily basis on several retro channels, it was part of a “wheel” of NBC mystery series, usually of 90 minutes in length, sometimes two hours. This gave each production team the time to craft the best episode possible for their series. It certainly shows with the ‘Columbo’ episodes.