“Lyn” (Anne Bancroft), a singer at a hotel, is experiencing heartbreak after a recent split from airline pilot “Jed” (Richard Widmark), who’s now holed up in his room with a drink while she—or rather, Eve Marley—tries to reach him through the public address system. Simultaneously, across the courtyard, a couple having dinner has hired “Nell” (Marilyn Monroe) as a babysitter. It's apparent that she isn’t particularly invested in her job and, after reading the child a story, begins to explore the suite, trying on expensive robes and jewelry. "Jed" spots her through the window and calls her room. She initially rejects his attention, but then some things happen that lead her to invite him up. “Nell” isn’t entirely forthcoming with details about herself as she gets to know him, but when the girl wakes up and her uncle “Eddie” (Elisha Cook Jr), who operates the elevators, shows up, "Jed" starts to question what he's gotten himself into. It becomes obvious to the viewer that “Nell” is a troubled person, likely dealing with or recovering from some kind of trauma. As her employer (Lorene Tuttle) arrives, things get even worse for her, and we begin to understand more about not only her story but also the real nature of the connection between "Jed" and "Lyn." It’s possible that the monochrome cinematography contributes to this effect, but I think it might be the most intense performance I've ever seen from Monroe. Her character seems to be balancing on a psychological edge, and she conveys that with a believable sense of unsettling genuineness as this slowly unfolding drama progresses. Widmark also gives a more restrained performance than he often does, and the script manages to do its job while still allowing us to observe what's happening; I found this to be quite a powerful short film.

Source on TMDB