Who's That Girl is a 1987 American screwball comedy film directed by James Foley, and written by Andrew Smith and Ken Finkleman. It stars Madonna and Griffin Dunne, and depicts the story of a street-smart girl who is falsely accused of murdering her boyfriend and is sent to jail. After release, she meets a man, supposed to make sure she gets on her bus back to Philadelphia, and convinces him to help her catch those responsible for her confinement. While searching for an embezzler, they fall in love with each other.

Thomas Griffin Dunne is an American actor, film producer, and film director. Dunne studied acting at The Neighborhood Playhouse School of the Theatre in New York City. He is known for portraying Jack Goodman in An American Werewolf in London (1981) and Paul Hackett in After Hours (1985), for which he was nominated for the Golden Globe Award for Best Actor – Motion Picture Musical or Comedy.