Don't Bother to Knock (1952)
Don't Bother to Knock is a 1952 American thriller film starring Richard Widmark and Marilyn Monroe, directed by Roy Ward Baker and written by Daniel Taradash. It is based on the book Mischief by Charlotte Armstrong published in 1951. Monroe is featured as a disturbed babysitter watching a child at the same New York hotel where a pilot, played by Widmark, is staying. Her strange behavior makes him increasingly aware that she is the last person the parents should have entrusted with their daughter.
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