On a tramp steamer off Central America are Mr. and Mrs. Sheppard, five prisoners en route to a Nicaraguan prison, and Corbett, an American carrying money for a Honduran counter-revolution. Denied permission to land in Honduras, Corbett releases the prisoners and with their aid hijacks the ship. They land, taking the wealthy Sheppards as hostages, and start the arduous trip upriver to Corbett's rendezvous, meeting jungle hazards
Glenn Ford
as Jim Corbett
Ann Sheridan
as Sylvia Sheppard
Zachary Scott
as Harry Sheppard
Rodolfo Acosta
as Reyes
Jack Elam
as Castro
Stuart Whitman
as Telegrapher (uncredited)
Stanley Andrews
as Capt. McTaggart
Ric Roman
as Jiminez
Rico Alaniz
as Bermudez
Paul Conrad
as Luis
Mel Welles
as Hidalgo (uncredited)
Michael Vallon
as Stranger (uncredited)
