Générique complet
The Mysterious Miss X
Michael Whalen
Keith Neville
Lynne Roberts
Julie Graham (as Mary Hart)
Chick Chandler
Dan 'Scooter' Casey
Mabel Todd
Annie Botts
Frank M. Thomas
District Attorney Al Ross
Regis Toomey
Jack Webster
Donald Douglas
Clarence Fredericks
Wade Boteler
Police Chief T. J. McDougal
Dorothy Tree
Alma Platt
Eddie Acuff
Pete, a Policeman
Pierre Watkin
Winslow
Harlan Briggs
Charlie Graham
Richard Cramer
Husband
Eddie Fetherston
Henchman
Alan Ladd
Henchman
BM
Bruce MacFarlane
Policeman
George Montgomery
Policeman
Frank O'Connor
Policeman
Broderick O'Farrell
Policeman
Walter Sande
Taxi Cab Driver
Harry Strang
Bus Driver
