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