An Out for Oscar (1963)

Mousey bank teller Oscar Blenny, a guest at a desert casino, is enamored with Eva, a seductive casino hostess, who’s happily juggling 2 male co-workers. With the sinister Bill she’s conniving to ripoff the casino. When her boss discovers she’s two-timing him, their confrontation turns violent and she kills her boss. Realizing that Oscar’s just outside, she screams, so schlemiel Oscar can corroborate her damsel-in-self-defense tale. The casino owner limits the publicity damage, by firing Eva and exiling Bill, who drops Eva cold, to Mexico. Eva cadges a ride to L.A. with Oscar and soon they are wed. When Oscar is nominated for a promotion, slovenly drunken Eva is a big liability, especially when Bill resurfaces in L.A. Does Eva kill Bill, will Bill reveal all about Eva, or will Oscar decline the award?