"Keyhole" is a 1956 American television play written by Sumner Locke Elliott. It was an episode of Playwrights '56 and was directed by Fred Coe better known as a producer. The play was more experimental than usual, using a narrator device who would address the audience.
The story was based on a real 1889 British trial.
Helen Cartwright is accused of murdering her husband.
Variety called it "nothing if not a vigorous vehicle for displaying a directorâÂÂs approach to staging a live show in a manner that compared favorably with the âÂÂliquid assetsâ of the motion, picture."
The Philadelphia Inquirer said "the whole thing seemed like a one set stage play."