Don't Bother To Knock is a 1952 dramatic thriller directed by Roy Ward Baker and written by Daniel Taradash. Jed Towers (Richard Widmark) is an airplane pilot who has just got back to New York. He is rushing to check-in at the McKinley Hotel where his girlfriend, Lyn Lesley (Anne Bancroft), is a singer. The couple have been in a relationship for six months, but Lyn ends the relationship with a letter when he arrives. She does not feel that he is ready to take the relationship to the next level, and she does not want to waste anymore time. While relaxing in his room, he sees a beautiful woman, Nell (Marilyn Monroe), across the way and the two begin to flirt. Nell is the niece of the hotel elevator operator, Eddie (Elisha Cook Jr.), and is working as a babysitter in the hotel. Eventually, the two meet up and Jed is surprised to find out Nell may be dangerous.