Flight to Nowhere (1946)

Alan Curtis plays Holby Carrington, a pilot who owns a charter aircraft. A dodgy party of well to do people charter his plane to go to Death Valley but it soon becomes apparent that there is something brewing with a plot which involves selling a map to "would be" dodgy businessmen giving the location of a plutonium deposit necessary for atomic bombs. Carrington is the mans man, the handsome good guy who is also investigating with the aid of an ex boss and CIA back room staff member.