A disturbed hotel babysitter's affair with a pilot leads to the sitter threatening the life of a child she is watching. Bancroft's screen debut!
- In the novel on which the movie is based Nell's surname is 'Munro'. This was changed to Forbes when Marilyn Monroe was cast in the role.
- The events in the film take place in real-time.
- Donna Corcoran is the only member of the cast still alive today.