Set in 1930, the film opens in New York City, where femme fatale Mrs. Erlynne finds that she is no longer welcomed by either the high-ranking men she has seduced or the society wives she has betrayed. Selling her jewelry, she buys passage on a liner bound for Amalfi, Italy, where she apparently sets her sights on newlywed Robert Windermere. When his car frequently is seen parked outside her villa, local gossips become convinced the two are having an affair.