 | James Mason als Ed Avery |
 | Barbara Rush als Lou Avery |
 | Walter Matthau als Wally Gibbs |
 | Robert F. Simon als Dr. Norton |
 | Christopher Olsen als Richie Avery |
 | Roland Winters als Dr. Ruric |
 | Rusty Lane als Bob LaPorte |
 | Rachel Stephens als Nurse |
 | Kipp Hamilton als Pat Wade |
 | Betty Caulfield als Mrs. LaPorte (uncredited) |
 | Virginia Carroll als Mrs. Jones (uncredited) |
 | Renny McEvoy als Mr. Jones (uncredited) |
| Billy Jones als Mr. Byron (uncredited) |
| Dee Aaker als Joe (uncredited) |
 | Jerry Mathers als Freddie (uncredited) |
| Portland Mason als Nancy (uncredited) |
| Natalie Masters als Mrs. Tyndall (uncredited) |
 | Richard Collier als Milkman (uncredited) |
 | Lewis Charles als Mr. McLennan (uncredited) |
 | Gus Schilling als Druggist (uncredited) |
| Alex Frazer als Clergyman (uncredited) |
| Mary McAdoo als Mrs. Edwards (uncredited) |
 | Mary Carver als Saleslady (uncredited) |
| Eugenia Paul als Saleslady (uncredited) |
| Gladys Richards als Lab Nurse (uncredited) |
| David Bedell als X-Ray Doctor (uncredited) |
 | Joseph Mell als Dispatcher (uncredited) |
| George Chester als Janitor (uncredited) |
| Nicholas Ray | Director |
| James Mason | Producer |
| Cyril Hume | Screenplay |
| Richard Maibaum | Screenplay |
| Joseph MacDonald | Director of Photography |
| Cyril Hume | Story |
| Richard Maibaum | Story |
| Louis R. Loeffler | Editor |
| Mary Wills | Costume Design |
| Ben Nye | Makeup Artist |
| Helen Turpin | Hairstylist |
| Charles LeMaire | Wardrobe Designer |
| Lionel Newman | Conductor |
| Edward B. Powell | Orchestrator |
| Berton Roueché | Short Story |
| David Raksin | Original Music Composer |
| Lyle R. Wheeler | Art Direction |
| Jack Martin Smith | Art Direction |
| Walter M. Scott | Set Decoration |
| Stuart A. Reiss | Set Decoration |
| Ray Kellogg | Special Effects |
| Eli Dunn | Assistant Director |
| Harry M. Leonard | Sound |
| W. D. Flick | Sound |
| Leonard Doss | Other |
| Ray Bomba | Sound Editor |
| Ralph Hickey | Sound Editor |
| James Mason | Additional Writing |
| Gavin Lambert | Additional Writing |
| Clifford Odets | Additional Writing |
| Nicholas Ray | Additional Writing |
