Ruth RolandRuth, The Girl Detective
Marin SaisBertha, the Girl Detective
Cleo RidgelyKate Rumson / Mrs. Rodger Hastings / Olga / Queenie / Molly Moran / Jean, The Girl Detective
Edward ClisbeeChief of Police Harding
Arthur ShirleyJohn Talcott
William H. WestRumson / Strumfsky / Isaacson / Fairfax / Marsden / Rankin / Deacon / Merriman / Craven / Kerrigan / Brandon / Dr. Barry
Paul HurstBlair / Thompson / Michaels / Snake Henely / Mike Donegal / Bat Dorgan / Kelly / Dalton / Blake
Ollie KirbyMrs. Churchill / Emily Wharton / Mary Kerrigan / Marie / Mrs. Winslow / Mabel Keene / Mrs. Cluett
