Hemingway on the case: Mariel Hemingway will star in TBS Superstation original political thriller movie "First Daughter." Doug Savant ("Melrose Place") and Monica Keena ("Dawson's Creek") will co-star in the TV film that is set to begin shooting this month in Australia. The story is about a Secret Service agent (Hemingway) and a river guide trying to track down the president's daughter who has been kidnapped during a hiking trip.