Ronald Mills

In Paris, unhappy movie actress Catherine Crachat becomes infatuated with the mathematician Pierre Indemini, but then breaks up with him. After a film shoot in Vienna, Catherine stays with a rich admirer, Fanny Hohenstein. Fanny has a history of many lovers of both sexes, two of whom killed themselves over her.

An Italian gentleman and a doctor's wife plot to break up their spouses' tryst in Paris.