John Baragrey
Dr. Henry Spensser
Mala Powers
Anne Spensser
Otto Kruger
Dr. William Spensser
Robert Hutton
Dr. John Robert Carrington
Ross Martin
Dr. Jeremy 'Jerry' Spensser
E
Ed Wolff
The Colossus
Charles Herbert
Billy Spensser
D
Dick Nelson
Charles - Chauffeur-Butler
R
Roy Engel
Police Inspector
Charles Sherlock
Airline Pilot
George Douglas
S
Sam Harris
L
Larry Kerr
Harold Miller
F
Foster H. Phinney
M
Max Power
Jack Richardson
C
Court Shepard
B
Bert Stevens
E
Ed Wolff