Leona Stevenson is confined to bed and uses her telephone to keep in contact with the outside world. One day she overhears a murder plot on the telephone and is desperate to find out who is the intended victim.
| Writing | Lucille Fletcher | Screenplay |
| Crew | Lucille Fletcher | Radio Play |
| Directing | Anatole Litvak | Director |
| Costume & Make-Up | Edith Head | Costume Design |
| Camera | Sol Polito | Director of Photography |
| Art | Sam Comer | Set Decoration |
| Production | Anatole Litvak | Producer |
| Art | Hans Dreier | Art Direction |
| Directing | Richard McWhorter | Assistant Director |
| Sound | Franz Waxman | Original Music Composer |
| Art | Bertram C. Granger | Set Decoration |
| Production | Hal B. Wallis | Producer |
| Art | A. Earl Hedrick | Art Direction |
| Camera | Fred True | Grip |
| Editing | Warren Low | Supervising Editor |
| Crew | Gordon Jennings | Special Effects |
| Costume & Make-Up | Wally Westmore | Makeup Supervisor |
| Sound | Gene Merritt | Sound Recordist |
| Sound | Walter Oberst | Sound Recordist |
| Visual Effects | Farciot Edouart | Visual Effects |
