Unforgettable is a film.
Principal photography . Principal photography is the phase of film production in which the movie is filmed , with actors on set and cameras rolling , as distinct from pre-production and post-production . Unforgettable (2017 film) . The film stars Katherine Heigl , Rosario Dawson , Geoff Stults , Isabella Rice and Cheryl Ladd , and follows a divorcée who begins to torment the new fiancé of her ex-husband . The film was released on April 21 , 2017 by Warner Bros. and has grossed $ 15 million against its $ 12 million budget .