- William Henry
- Agent Phil Sherrin
- Pamela Blake
- Mrs. Judith Palmer
- Robert Shayne
- Chief Agent Charles Stuart
- Lyle Talbot
- Agent Johnson
- Movita
- Lolita Martinez / Montez (as Movita Castaneda)
- Lori Talbott
- Betty Herbert - elevator operator
- John Laurenz
- Rodriguez - Mexican Agent
- Ben Moselle
- Mack
- George Eldredge
- Wade Brandon
- Dennis Moore
- Harry
- Noel Cravat
- Rocky
- Paul Hoffman
- George Hodge - garage 'front man'
- Joe Turkel
- Jack 'Sneeze' Norton
- Bill Edwards
- Agent George Palmer
- William F. Leicester
- Frankie Lanessi
- William Bailey
- Man in Elevator
- Smith Ballew
- James Snow - Mining Engineer
- Myron Healey
- The Tracking Device Specialist
- Carl M. Leviness
- Henry Waring
- William H. O'Brien
- Stuart's Driver
- Gene Roth
- The Homicide Detective
- Carlo Schipa
- Tony Solano - Henchman
