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

Bruce MacFarlane

Policeman

George Montgomery

Policeman

Frank O'Connor

Policeman

Broderick O'Farrell

Policeman

Walter Sande

Taxi Cab Driver