Another Columbo muddle this time not mine!

I once knew a girl once had a boyfriend who was quite obnoxious (The Cowgirl Sleuther pulls no punches) . Anyway they got into an argument about the term simulacrum (young love heh?). My mate used the example of the word “Rosebud” in “Citizen Kane” as a simulacrum, Unfortunately the argument about whether or not Rosebud was a simulacrum became quite heated. The boyfriend’s memories of Citizen Kane didn’t seem to add up or compare to my friend’s memories of the epic film. Step in to the fray, the Cowgirl Sleuther, ready to break up the fight. I asked the man what his memories of Citizen Kane were. For all his arrogance and supposed superior film knowledge, the poor man had confused scenes from a Columbo mystery with this grand old man of cinema!
Yes folks the boyfriend had been thinking of “How to Dial a Murder”, where a man kills his business partner by teaching his pet Dobermans to kill on s single word command, this word being ROSEBUD!