William H. West

as Dr. Jardine - a Vivisectionist

as Rumson / Strumfsky / Isaacson / Fairfax / Marsden / Rankin / Deacon / Merriman / Craven / Kerrigan / Brandon / Dr. Barry

as John Franklin

as General Fields

as Simon Watson - a Drug Manufacturer

as William Sawyer

as Driver of the Deadwood Coach

as Pasquale