Story of South American mail pilots, and the dangers they face flying at night.

John Barrymoreas Riviere
Helen Hayesas Madame Fabian
Clark Gableas Jules
Lionel Barrymoreas Robineau
Robert Montgomeryas Auguste Pellerin
Myrna Loyas Wife of Brazilian Pilot
William Garganas Brazilian Pilot
C. Henry Gordonas Daudet
Leslie Fentonas Jules' Radio Operator / Co-Pilot
Harry Beresfordas Pierre Roblet