The Exorcist: Behind-the-Scenes Stories From Linda Blair (Flashback)

Linda Blair and William Friedkin opened up to ET about filming 'The Exorcist.' The actress and director recalled how the iconic horror movie came together in retrospective interviews, from Linda's casting at just 12 years old as possessed child Reagan to the set burning down following a mysterious fire. Fifty years later, Ellen Burstyn has reprised her role as Reagan's distraught mother in 'The Exorcist: Believer,' head-spinning into theaters on Oct. 6.