A private detective foils the plans of villains attempting to take over Panamanian oil fields while he searches for a valuable map hidden in plain sight.

Pat O'Brienas Dan Hammer
Anne Jeffreysas Maxine Manning
Walter Slezakas Eric Molinar
Percy Kilbrideas Pop
Jerome Cowanas Walter F. Gredson
George Givotas Police Lt. Rues
Jason Robards Sr.as Mr. Domingues
Marc Krahas Charles Hasso
Robert Andersenas Co-Pilot (uncredited)
Ernest Andersonas Wong - Houseboy (uncredited)