John Howard
— Merrill Hammond
Helen Gilbert
— Diana Bryce
Gilbert Roland
— Dan Curtis
Alan Mowbray
— Dr. Brown
Bradley Page
— George Kent
Kitty O'Neil
— Nurse Pauline
George Chandler
— Ship's bartender
Ernie Adams
— Captain of the S. S. Mariposa
Egon Brecher
— Richard Heller
Dewey Robinson
— Prisoner
Kenne Duncan
— Henderson
Alex Havier
— Sani