 |
Ralph Bellamy as Ellery Queen |
 |
Margaret Lindsay as Nikki Porter |
 |
Charley Grapewin as Insp. Queen |
 |
Noel Madison as Gordon Cobb |
 |
Ann Doran as Sheila Cobb |
 |
James Burke as Sgt. Velie |
 |
Anna May Wong as Lois Ling |
 |
Eduardo Ciannelli as Count Brett (as Edward Ciannelli) |
 |
Frank Albertson as Sanders |
 |
Charles Lane as Doc Prouty |
 |
Russell Hicks as Harry Walsh |
 |
Tom Dugan as McGrath |
 |
Mantan Moreland as Roy |
 |
Theodore von Eltz as Jim Ritter |
| Directing | James P. Hogan | Director |
| Writing | Eric Taylor | Screenplay |
| Writing | Frederic Dannay | Writer |
| Writing | Manfred Lee | Writer |
| Production | Larry Darmour | Producer |
| Sound | Lee Zahler | Original Music Composer |
| Camera | James S. Brown Jr. | Director of Photography |
| Editing | Dwight Caldwell | Editor |
