Frankie is a troubled African American go-go dancer in the 70s who begins a mental struggle when she repeatedly forgets large chunks of her life. She finds a crossword filled out in childish handwriting and an expensive designer dress in her wardrobe she doesn't remember purchasing among the various confusing clues suggesting there's something wrong. She is suffering from dissociative identity disorder (DID), more commonly known as multiple personality disorder, in which she possesses two alter-egos. One of them is Genius, a smart young child, while the other is the unashamedly racist Alice who appears to be a white woman with a Southern American accent. Unable to link these personalities together herself, the people around her - from friends and family to conquests and the authorities - are becoming desperately confused with her unpredictable behaviour and she is referred to a doctor who is determined to bring her out of her debilitating ordeal.
Continue: Frankie & Alice Trailer
The film is almost half an hour longer than 'The Force Awakens'.
The actress will no doubt be returning for the long-running FX series.
The film is expected to continue without Mendes' involvement.