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.
Trivia: Peter Falk's real-life wife appeared in 6 episodes, each time as a different character.
Trivia: Columbo's wardrobe for the show was Peter Falk's own clothes.
Trivia: While Columbo's first name is never said, "The Trivia Encyclopedia" by Fred L. Worth listed his first name as "Philip." When the board game "Trivial Pursuit" used this fact as a question, Worth sued "Trivial Pursuit" for copyright infringement because he had actually made up that fact to catch anyone violating his copyright, the same way a mapmaker or dictionary company would add something fake to catch unauthorized copiers. Worth lost the case and his subsequent appeal was dismissed.
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 hitting the back of his head hard on the ground.
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