Audio problem: There is a scene where the mistress of the murderer enters his bureau. You see her push the door closed while hastening through. You can hear the door lock click - but a half second too early. Her push wasn't that strong. (00:47:05)
Columbo: Prescription Murder (1968)
1 audio problem
Directed by: Richard Irving
Starring: Peter Falk, Gene Barry, William Windom, Katherine Justice
Revealing mistake: Just after the scene where the doctor asks Columbo to switch off the light before leaving, the detective does so, but it can be seen that both light switches are down before he does this, and that they are still both in the down position after he "switches off" the light.
Lt. Columbo: I think I'm too suspicious. I don't trust people, that's my trouble.
Trivia: The first choice for actors to play Colombo was Bing Crosby.