The story is based on true events. The real George Tweed died in 1989.
According to a newspaper article (Le Petit Journal, Montreal) from August 25, 1946, Tweed had promised the native rancher, Antonio Artero, a new car if he evaded capture and returned to the United States. Tweed, with the help of General Motors, sent a car to Antonio Artero from San Francisco.
The only reason for Barbara Perez in accepting this project was for the opportunity to go to Hollywood to see her favorite stars. She indeed joined the cast in promoting the film in U.S.A.
The film was set in Guam but shot entirely in the Philippines, and all the supporting actors spoke Tagalog rather than Chamorro.
Based on the 1945 book "Robinson Crusoe, USN" by George Ray Tweed, who is depicted in the film by Jeffrey Hunter.