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Other mistake: We often see Trump in a Cadillac limousine (for example, when he meets Ivana in 1976). The model car we see wasn't available until 1990.

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Identity Crisis - S5-E3

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?

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Identity Crisis - S5-E3

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.

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Now You See Him - S5-E5

Trivia: Cassidy performs as "The Great Santini." Bull Meechum (Robert Duvall) refers to himself as "The Great Santini" in the movie of the same name.

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Fade in to Murder - S6-E1

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.

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Fade in to Murder - S6-E1

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.

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Fade in to Murder - S6-E1

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.

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Cabin Catastrophe - S21-E5

Factual error: We see the flight attendant looking at a passenger's boarding pass and showing her to her seat. Southwest does not have assigned seats.

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A Matter of Honor - S5-E4

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.

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Welcome to the Pickle - S7-E10

Trivia: Calvin is polishing his convertible while we hear the song "Workin' at the Carwash, Yeah." This is a reference to the movie "Car Wash."

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Uninvited Guests - S5-E4

Character mistake: Tristan is out with James, Helen, and Young James in a pram. Tristan gives Young James a salute—an American-style (palm down) salute. Tristan is a British Army officer and would use only the British (palm forward) salute.

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Breathe with Me - S3-E5

Stupidity: The SWAT team waits for Trent and Faith Mitchell to arrive before they break into the storage unit. They strongly suspect that Evelyn Mitchell is being held there. Why did they wait?

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Scenes from an Italian Restaurant - S2-E14

Trivia: In Season 2 Episode 14 (Scenes from an Italian Restaurant), Detective Fleming says to Roy, "You're the boss." That is a reference to "Who's the Boss?", in which Alyssa Milano played the daughter.

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Tiny Town - S2-E11

Audio problem: Angus is clearly not playing the mandolin and guitar at various places in the show.

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Factual error: When it appears that Alaska is under attack, Gen. Beringer orders 2 F-16s scrambled. The planes we see are F-15s.

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Other mistake: The simulator pilots are operating the throttles. After the bird strikes, both engines were inoperable, so the throttles wouldn't do anything.

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A Deadly State of Mind - S4-E6

Stupidity: Collier damages a post with his car as he leaves the driveway. His car would certainly have been damaged. The storyline is not long enough for Collier to have his car repaired. Columbo knows about the damaged post, but he never looks into how the damage occurred and never looks at Collier's car, which would have been incriminating.

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A Deadly State of Mind - S4-E6

Plot hole: Collier's relationship with Nadia Donner is wildly improper, and her husband knows about it. It seems unlikely that nothing was done about it.

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Playback - S4-E5

Character mistake: Columbo lies on Mrs. Van Wick's bed to demonstrate that she wouldn't be able to see the toy clown if the door was closed. He has his shoes on and puts them on the bedspread and never apologises for doing so. I don't think Columbo would be so inconsiderate.

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Playback - S4-E5

Audio problem: Van Wick says he'll rewind the tape for Columbo. We hear the tape rewinding before he gets to the video room.

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