Trailer
Images
 | Dorothy McGuire as Helen |
 | George Brent as Professor Warren |
 | Ethel Barrymore as Mrs. Warren |
 | Kent Smith as Dr. Parry |
 | Rhonda Fleming as Blanche |
 | Gordon Oliver as Steve Warren |
 | Elsa Lanchester as Mrs. Oates |
 | Sara Allgood as Nurse Barker |
 | Rhys Williams as Mr. Oates |
 | James Bell as Constable |
 | Erville Alderson as Dr. Harvey (uncredited) |
 | Ellen Corby as Neighbour (uncredited) |
 | Myrna Dell as Murder Victim (uncredited) |
 | George Holmes as The Killer's 'Shadow' (uncredited) |
 | Stanley Price as Starry-eyed Man (uncredited) |
 | Robert Siodmak as The Killer's 'Eye' (uncredited) |
 | Richard Tyler as Freddy (uncredited) |
 | Charles Wagenheim as Desk Clerk (uncredited) |
 | Larry Wheat as Minister (uncredited) |
| Camera | |
| Nicholas Musuraca | Director of Photography |
Production | |
| Dore Schary | Producer |
Writing | |
| Ethel Lina White | Novel |
| Mel Dinelli | Screenplay |
Art | |
| Albert S. D'Agostino | Art Direction |
Editing | |
| Harry Gerstad | Editor |
Directing | |
| Robert Siodmak | Director |
Art | |
| Jack Okey | Art Direction |
Editing | |
| Harry Marker | Editor |
Sound | |
| Roy Webb | Original Music Composer |
Crew | |
| Gordon Carveth | Stunts |
| Vernon L. Walker | Special Effects |
Sound | |
| Terry Kellum | Sound |
Production | |
| Edgar Peterson | Production Assistant |
Art | |
| Darrell Silvera | Set Decoration |
Directing | |
| Harry Scott | Assistant Director |
Sound | |
| John L. Cass | Sound |
| C. Bakaleinikoff | Music Director |
Visual Effects | |
| Chris Crowell | Digital Compositor |
Sound | |
| Samuel Hoffman | Musician |
Production | |
| Fred Fleck | Production Manager |
Costume & Make-Up | |
| Edward Stevenson | Costume Design |
