Directed by
| Phil Rosen | ... | (as Philip Rosen) |
Writing Credits
| Robert Charles | ... | (original screenplay) |
Cast (in credits order) complete, awaiting verification
| Bela Lugosi | ... | Prof. Dexter | |
| John Carradine | ... | Prof. John Gilmore | |
| George Zucco | ... | Ape Man | |
| Frank Moran | ... | Ape Man | |
| Teala Loring | ... | Anne Gilmore (as Judith Gibson) | |
| Tod Andrews | ... | Steve Rogers (as Michael Ames) | |
| Mary Currier | ... | Mrs. Hilda Gilmore | |
| Eddy Chandler | ... | Sergeant (as Ed Chandler) | |
| Ernie Adams | ... | Tramp, Willie the Weasel | |
| Rest of cast listed alphabetically: | |||
| Horace B. Carpenter | ... | Theater Watchman (uncredited) | |
 |
Mike Donovan | ... | Policeman Barney (uncredited) |
| George Eldredge | ... | Policeman (uncredited) | |
|
|
Frank Leigh | ... | Long Shot (archive footage) (uncredited) |
Produced by
| Jack Dietz | ... | producer |
| Sam Katzman | ... | producer |
| Barney A. Sarecky | ... | associate producer (as Barney Sarecky) |
Cinematography by
| Marcel Le Picard | ... | (photography) |
Editing by
| Carl Pierson | ||
Second Unit Director or Assistant Director
| Arthur Hammond | ... | assistant director (as Art Hammond) |
Art Department
| Dave Milton | ... | set designer |
Sound Department
| Glen Glenn | ... | sound engineer |
Special Effects by
| Ray Mercer | ... | special effects |
Music Department
| Edward J. Kay | ... | musical director (as Edward Kay) |
