Frankie Thomas
Tim Tyler
Acting
Frances Robinson
Lora Lacey
Acting
Jack Mulhall
Sgt. Gates
Acting
Al Shean
Professor Tyler
Acting
Norman Willis
Spider Webb
Acting
Anthony Warde
Garry Drake
Acting
Earl Douglas
Jules Lazarre
Acting
William Benedict
Spud
Acting
Frank Mayo
Jim Conway
Acting
Alan Gregg
Brent
Acting
Stanley Blystone
Capt. Clark
Acting
Everett Brown
Mogu
Acting
Skippy
JuJu
Acting
Ernie Adams
Henchman Becker
Acting
Ed Brady
Ivory Patrol Lieutenant
Acting
Al Bridge
Capt. Trowbridge
Acting
Lane Chandler
Patrolman Kelly
Acting
William Desmond
Dock Official
Acting
Kenneth Harlan
Spencer, Trader
Acting
Ethan Laidlaw
Patrol Guard Rocky
Acting
William McClain
Native
Acting
Chuck Morrison
Henchman
Acting
Charles Murphy
Henchman
Acting
Forbes Murray
The Doctor
Acting
Pat J. O'Brien
Patrolman Berry
Acting
Eddie Parker
Henchman
Acting
Tom Steele
Ivory Patrolman
Acting
Charles Sullivan
River Boat Crewman / Henchman
Acting
Harry Wilson
Henchman
Acting