New York City, 1950. Viviana Valentine is Girl Friday to private investigator, Tommy Fortuna. Fabulously wealthy Tallmadge Blackstone demands Tommy tail his daughter, Tallulah, to find out why she won't marry his business partner, but the next day, Viviana opens the office to find Tommy missing and a lifeless body on the floor. Making her first outing, Viviana takes on the case herself, but she risks her neck as she digs into the dirty history of the Blackstone empire, and she needs to make sure her boss doesn't turn up D.O.A