Daniel Valentine, one of England's most talented and famous playwrights, has been commissioned to finish the script for an unfinished play by the late American playwright Sylvia Ashbourne. When weeks into the project, he attends a party at the Waldorf Astoria organised by his sponsor and Patron of the Arts Sir Charles Farrington. At the party Valentine meets the mysterious and dangerous Isabella Reed. Soon captivated by her, he ignores pleas from Farrington and his writing partner Larry Soames that Reed is bad news. Very bad news.