Two Nights with Cleopatra (1954)

cesarino, a naive soldier recently arrived at the camp of cleopatra, believes he spends a night with her, but in reality he lies with nisca, a queen's double. the latter, who has the macabre habit of killing everyone who spends the night with her, left to meet marcantonio. the good cesarino, doubly lucky, has saved his life and conquers nisca's heart.