Continuity mistake: When Raymond brings the doctor his milk and pill, the tray with the milk and pill are already on the bedside table.
Continuity mistake: Columbo tells Montoya he has to be back in Los Angeles on Monday. Then he tells Sanchez he has to be there on Tuesday.
Continuity mistake: At the cafe when Columbo talks with the police officer his cigar is in his hand in the back shots but disappears in the front shots.
Factual error: Probably an in joke - the wheels of the "airliner" shown landing at LA international airport are those of a B52 bomber. They are very distinctive and look nothing like those on any airliner ever made.
Trivia: Columbo's first name is never mentioned throughout the series. However in a few episodes, such as "Dead Weight", "A Matter of Honor" and "Death Hits the Jackpot" he flashes his badge and the name "Frank" can clearly be seen.
Question: The examiner says he can't tell which blow hit the victim first. Columbo says he's lying on his back and says the blow to the forehead was first. Why did he think that? If the first blow hit him on the forehead and he fell on his back, how did he get the second blow on the back of his head while he was lying that way?
Answer: Columbo deduces that the first blow must have been to the front of the head, the force causing the victim to fall backwards and hit the back of his head hard on the ground.
raywest ★