Cast
Norman Willis
Spider Webb
Charles Murphy
Henchman
Eddie Parker
Henchman
Stanley Blystone
Capt. Clark
Forbes Murray
The Doctor
Charles Sullivan
River Boat Crewman / Henchman
Frank Mayo
Jim Conway
William Desmond
Dock Official
Ethan Laidlaw
Patrol Guard Rocky
Frances Robinson
Lora Lacey
Everett Brown
Mogu
Lane Chandler
Patrolman Kelly
Al Bridge
Capt. Trowbridge
Harry Wilson
Henchman
Jack Mulhall
Sgt. Gates
William Benedict
Spud
Ernie Adams
Henchman Becker
Kenneth Harlan
Spencer, Trader
Frankie Thomas
Tim Tyler
Al Shean
Professor Tyler
Ed Brady
Ivory Patrol Lieutenant
Anthony Warde
Garry Drake