Too Late For Tears (1949)

Snake of a woman (great performance by Lizabeth Scott) got hold of a briefcase containing 50.000$ in cash which were stolen. Confident on keeping it for herself she resorts to all kinds of brutal deeds which only a woman of her kind is capable, going so far to kill girlfriend of her best friend and poisoning her criminal friend (good performance by Dan Duryea). Of course, we can't blame her, for femme fatales were always present in literature and art. As she finished those two she goes down to Mexico to enjoy life, but persistent party breaker tracks her down in hotel with mexican cops and confronts her. Poor woman, cornered, jumps of the balcony with stolen cash and kills herself.