I Was an Adventuress

I Was an Adventuress is a 1940 American drama film directed by Gregory Ratoff, starring Vera Zorina, Richard Greene, Erich von Stroheim and Peter Lorre. Actressballerina Countess Tanya Vronsky Vera Zorina is a phony countess, working in concert with two international con artists Andre Desormeaux Erich von Stroheim and Polo Peter Lorre.

They meet again months later in Paris, and Desormeaux makes another attempt at getting the countess to work with them again. In order to get rid of them for good, she pretends to go along with their plans, but instead sets them up to be caught.However, her plan is thwarted, and her two accomplices come to her home during a party and pretend to be guests. They manage to steal the guests jewels and escape from the house without getting caught. Before they leave, Desormeaux blackmails Tanya, threatening to tell Paul about her past if he doesnt get 200,000 Francs. ........

Source: Wikipedia