The bull that kills Hector is named Marinero, which means "Sailor" in Spanish.
The film clips Montoya watches of himself as a young man in the bull ring are taken from a film Ricardo Montalban made in Mexico in 1944 called La Hora de la Verdad (The Hour of Truth).
Comandante Sanchez: I see you're a thorough man, Lieutenant, but the bull did kill Rangel.
Columbo: Yes, I can see that but it's important to be thorough, especially when a man dies alone.
Sanchez: I hope you understand, Luis, that the Lieutenant is here as my guest. He has no official status.
Luis Montoya: So inquisitive. I find him amusing.
Columbo: That shows you I don't know much about bullfighting.
Ranch Foreman: Is that all, señor?
Columbo: You know, I think my wife was right. There's something wrong with me. I'm supposed to be on vacation and right away I'm thinking like a cop. That's called, uh, occupational hazard.
Foreman: Occupational hazard, what is that?
Columbo: That's, uh, when wherever you go you take your work with you.
Foreman: Oh, I see. We call that loco.
70 minutes long.
One of the few times the show refers back to a previous episode. The Police Chief says he read in the newspaper about Columbo's solving of a murder on a cruise ship "last year". This show aired just about one year after "Troubled Waters"
90 minutes long.