Julia Swayne Gordon
— Nelga Petrona - The Tigress
Bobby Connelly
— Ivan Petrona - Nelga's Adopted Son (Age 7)
Garry McGarry
— Ivan Petrona - Nelga's Adopted Son (Age 20)
Zena Keefe
— Judith - Harmon's Adopted Daughter
Harry English
— Judge Thomas Harmon
Leo Delaney
— Jim Harrigan - Detective
Katherine Franek
— Mrs. Lelah Renton - Housekeeper
George Stevens
— Tim Rooney - Harrigan's Assistant
Frank Holland
— Osip Petrona - Husband of the Tigress