![]() |
Donald Meek as Dr. Crabtree |
![]() |
John Hamilton as Insp. Carr |
![]() |
Robert Middlemass as Boris Seminoff |
![]() |
Thelma Tipson as Dolly Demarest |
![]() |
Walter Fenner as Ian Stevens |
![]() |
Jane Bramley as Mae Norton |
![]() |
Frank McNellis as Monitor Man (uncredited) |
![]() |
Harry Tyler as Assistant Director (uncredited) |
![]() |
Herschel Mayall as Medical Examiner (uncredited) |
| Directing | Joseph Henabery | Director |
| Writing | Burnet Hershey | Adaptation |
| Writing | S.S. Van Dine | Writer |
| Camera | Edwin B. DuPar | Director of Photography |