Directed by
| Ford Beebe | ||
Writing Credits
| Clarence Upson Young | ... | (original screenplay) |
Cast (in credits order) complete, awaiting verification
| Bela Lugosi | ... | Rolf | |
| Lionel Atwill | ... | Dr. King | |
| Leif Erickson | ... | Laurie (as Leif Erikson) | |
| Irene Hervey | ... | Dr. Lynne Harper | |
| Ralph Morgan | ... | Kurt Ingston | |
| Don Porter | ... | Dick Baldwin | |
| Nils Asther | ... | Agor Singh | |
| Fay Helm | ... | Margaret Ingston | |
| Frank Reicher | ... | Dr. Timmons | |
| Doris Lloyd | ... | Sarah Judd | |
| Francis Pierlot | ... | Dr. Phipps | |
| Robert Homans | ... | Constable Cap Beggs | |
| Janet Shaw | ... | Milly Carson | |
| Eddy Waller | ... | Jed Harmon | |
| Cyril Delevanti | ... | Torque | |
Produced by
| Ford Beebe | ... | producer |
| Donald H. Brown | ... | associate producer |
Cinematography by
| Charles Van Enger | ... | director of photography |
Editing by
| Milton Carruth | ||
Art Direction by
| Jack Otterson | ||
Set Decoration by
| Russell A. Gausman | ... | (as R.A. Gausman) |
Costume Design by
| Vera West | ... | (gowns) |
Second Unit Director or Assistant Director
| Vernon Keays | ... | assistant director (uncredited) |
Art Department
| A.J. Gilmore | ... | associate set decorator |
| Richard H. Riedel | ... | associate art director (as Richard Riedel) |
Sound Department
| Bernard B. Brown | ... | sound director |
| Robert Pritchard | ... | sound technician |
Costume and Wardrobe Department
| Eugene Joseff | ... | costume jeweller (uncredited) |
Music Department
| Hans J. Salter | ... | musical director (as H.J. Salter) |
| Richard Hageman | ... | composer: stock music (uncredited) |
| Charles Previn | ... | composer: stock music (uncredited) |
| Hans J. Salter | ... | composer: stock music (uncredited) |
| Frank Skinner | ... | composer: stock music (uncredited) |
