Haunting FLATLINERS Trailer Check out the new FLATLINERS trailer! The film, directed by Niels Arden Oplev (Dead Man Down, The Girl with the Dragon Tattoo), stars Ellen Page, Nina Dobrev, Kiersey Clemons, Diego Luna, James Norton, and Kiefer Sutherland. FLATLINERS will be released in theaters on September 29. Five medical students, obsessed by what lies beyond the confines of life, embark on a daring experiment: by stopping their hearts for short periods, each triggers a near-death experience – giving them a firsthand account of the afterlife.