65 mins | Mystery | Jan. 10, 1939
65 mins | Mystery | Jan. 10, 1939
| Producers | Republic Pictures |
| Original title | The Mysterious Miss X |
| Directors | Gus Meins |
| Writers | Olive Cooper, George Worthing Yates |
as Keith Neville
as Julie Graham (as Mary Hart)
as Dan 'Scooter' Casey
as Annie Botts
as District Attorney Al Ross
as Jack Webster
as Clarence Fredericks
as Police Chief T. J. McDougal
as Alma Platt
as Pete, a Policeman
as Winslow
as Charlie Graham
as Husband
as Henchman
as Henchman
as Policeman
as Policeman
as Policeman
as Policeman
as Taxi Cab Driver
as Bus Driver