Factual error: The murder is solved based on the time the Chinese pulled out of the Olympics. (The episode was from 1975, so it must be the 1976 Olympics.) The Chinese never pulled out of the Olympics or threatened to do so. Taiwan was kicked out of the Olympics by Canada, but Columbo mentions that it was Peking, that is, Communist China.
Factual error: Columbo solves the case based on fingerprints on the shell casings in the gun. No gun, even a prop gun that never fires live rounds, would be put away loaded.
Other mistake: We see Fowler (Shatner) take the gun from the board in the Gun Room. Later, he puts the gun back, but in a different place on the board. Anyone in the Prop Department might notice that the gun had been moved.
Continuity mistake: When Fowler (Shatner) goes into the Wardrobe Department and takes the parka and ski mask, he has a dark green garbage bag. When he leaves that room and goes to the Gun Room, the bag is grey.
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 ★