- Walter Reed
- Hal Duncan
- Mary Ellen Kay
- Kay Roberts
- Dick Curtis
- Regan
- John Pickard
- Sam Bradley
- Fred Coby
- Cady
- Pierce Lyden
- Armstrong
- George Meeker
- Willard
- John Phillips
- J.J. Patterson [Ch. 1]
- Mauritz Hugo
- Thompson
- Edmund Cobb
- Turner [Ch. 3]
- Eddie Dew
- Barnett [Ch. 9]
- George Lloyd
- Coroner [Ch. 2]
- Dale Van Sickel
- Brice [Ch. 7] / Kern [Ch. 10]
- Tom Steele
- Brandt [Ch. 1] / Warehouse Thug [Ch. 3]
- Arthur Space
- Crandall
- Norval Mitchell
- District Attorney [Ch. 10]
- Frank Meredith
- Motorcycle Cop [Ch. 1]
- Frank Alten
- Casey - Janitor [Ch. 10]
- Roy Barcroft
- Coast Guard Dispatcher [Ch. 8]
- Gene Christopher
- Bystander [Ch. 12]
- Dick Crockett
- Crane - Henchman [Ch. 1]
- Ralph Dunn
- Patrolman McGee [Ch. 3]
- Terry Frost
- Car Heavy [Ch. 1]
- Richard Grant
- Gas Station Attendant [Ch. 7]
- Dean Henson
- Gray - Henchman [Ch. 11]
- Jay Merrick
- Hospital Attendant [Ch. 2]
- Frank O'Connor
- Policeman [Ch. 12]
- Eddie Parker
- Payne [Ch. 8]
- Joe Phillips
- Miller - Henchman [Ch. 2]
- Harry Raven
- Henchman
- Duke Taylor
- Kirk - Henchman [Ch. 7]
- William Thourlby
- Larson - Henchman [Ch. 3]
- George Volk
- Daly - Henchman [Ch. 12]
