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Ruth Roland
Ruth, The Girl Detective
Marin Sais
Bertha, the Girl Detective
Cleo Ridgely
Kate Rumson / Mrs. Rodger Hastings / Olga / Queenie / Molly Moran / Jean, The Girl Detective
Edward Clisbee
Chief of Police Harding
Arthur Shirley
John Talcott
William H. West
Rumson / Strumfsky / Isaacson / Fairfax / Marsden / Rankin / Deacon / Merriman / Craven / Kerrigan / Brandon / Dr. Barry
Paul Hurst
Blair / Thompson / Michaels / Snake Henely / Mike Donegal / Bat Dorgan / Kelly / Dalton / Blake
Ollie Kirby
Mrs. Churchill / Emily Wharton / Mary Kerrigan / Marie / Mrs. Winslow / Mabel Keene / Mrs. Cluett
Thomas G. Lingham
George Warren / Machson / Doran / Rat Hogan / Ripert Bladeau / Jarvis / Breslow / Jeffries / Rillando / Dr. Keene
Frank Jonasson
McGregor / Buck Donegal / Fourteen-Carat Tommy / Henri Bladeau / Turner / Denton / Jordan / Scotty Weed
R. Henry Grey
Rodger Hastings / Harry Warrington
Thomas Galligan
Peters / Thompson
