Prescription: Murder (1968)

Dr. Ray Flemming: You're an intelligent man, Columbo, but you hide it.

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Dr. Ray Flemming: Lieutenant, if there's any further way I can be of assistance to you...
Lt. Columbo: Oh, no, no, no, you just make out that list, that'll be fine, Doc.
Dr. Ray Flemming: Thank you.
Lt. Columbo: Oh, oh, one more thing, before I forget...

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Lt. Columbo: I think I'm too suspicious. I don't trust people, that's my trouble.

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Several different sources have different first names for Columbo. By focusing in on his badge he occasionally flashed, some say it was Frank some say it was Joseph. Trivial Persuit has it as Philip, which they got from a trivia book that purposely made it up to see if anyone was paying attention. The writers say he definitely was not given a first name.
The role of Lt. Columbo was offered to Lee J. Cobb, but he had to decline due to a clash in scheduling.
Originally written as a Broadway play, the production was out of town bound for Broadway in 1962 when Thomas Mitchell (who was playing Columbo) died. The production closed and the script was later reworked for television. This film, which established Peter Falk as the definitive Lt. Columbo, was adapted from the 1962 play by the same authors. The play in turn had been adapted from Enough Rope, in which Bert Freed originated the role of Columbo.
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