The Naked Dawn (1955)

Given a bigger budget than usual, cult director Edgar G. Ulmer rises to the occasion in The Naked Dawn. Filmed in Mexico, the story focuses on a poor but proud farmer named Manuel (Eugene Iglesias) and his wife Maria (Betta St. John).

When glib-tongued drifter Santiago (Arthur Kennedy) tries to get Manuel mixed up in a train robbery, the farmer is at first resistant, but is goaded into joining Santiago by the covetous Maria.

Corrupted by the prospect of untold wealth, Manuel begins plotting the murder of Santiago; meanwhile, Maria makes plans to bump off Manuel and run off with the handsome stranger. There's a moral in all this, and Ulmer makes certain that we don't miss it.