Fire Down Below.

Americans Tony (Lemmon) and Felix (Mitchum) own a tramp boat, the Ruby, which they use for small-scale smuggling around the Caribbean. One day, their bartender contact introduces them to an American businessman who has been enjoying the company of beautiful but passport-less European goddess Irena (Hayworth) On the voyage, Tony starts falling in love with her. When she disembarks, Tony goes with her, ending his partnership with Felix. Tony and Jimmy Jean take on a shady job, but are intercepted by the authorities.