 |
Chester Morris as Detective Anderson |
 |
Chance Ward as Police lieutenant |
 |
Una Merkel as Dale Van Gorder |
 |
Richard Tucker as Mr. Bell |
|
Wilson Benge as The Butler |
 |
DeWitt Jennings as Police Captain |
 |
Sidney D'Albrook as Police Sergeant |
|
S.E. Jennings as Man in Black Mask |
 |
Grayce Hampton as Miss Cornelia van Gorder |
 |
Maude Eburne as Lizzie Allen |
 |
Spencer Charters as The Caretaker |
 |
William Bakewell as Brook |
 |
Gustav von Seyffertitz as Dr. Venrees |
|
Hugh Huntley as Richard Fleming |
 |
Charles Dow Clark as Detective Jones |
 |
Ben Bard as The Unknown |
| Directing | Roland West | Director |
| Writing | Mary Roberts Rinehart | Theatre Play |
| Writing | Avery Hopwood | Theatre Play |
| Writing | Roland West | Writer |
| Production | Joseph M. Schenck | Producer |
| Camera | Ray June | Director of Photography |
| Camera | Robert H. Planck | Director of Photography |
| Editing | Hal C. Kern | Editor |
| Editing | James Smith | Editor |
| Art | Paul Crawley | Set Decoration |
| Costume & Make-Up | S.E. Jennings | Makeup Artist |
| Production | Helen Hallett | Production Manager |
| Directing | Roger Heman Sr. | Assistant Director |
| Sound | Oscar Lagerstrom | Sound |
