Based on a novel by Charlotte Armstrong, DON'T BOTHER TO KNOCK is a movie directed by Roy Ward Baker in 1952.
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The setting is a big hotel in NYC. After an argument with Anne Bancroft, Richard Widmark makes the acquaintance of Marilyn Monroe who's baby-sitting in a room on the same floor. At first seduced by Marilyn, Widmark remarks little by little that the young girl has a strange behaviour. In fact, she's just got out of a mental institution where she's spent the last three years after the accidental death of her boy-friend.
While Widmark is trying to find a way to leave the room without hurting her feelings, Marilyn is secretly blaming the little girl she has to look after for Widmark's reticence. Things become out of control as she begins to suffer from hallucinations and believes that Widmark is her former lover.
The review of this Movie prepared by Daniel Staebler