Movie PictureExorcist: The Beginning:MTV has the first description up of the upcoming trailer for the The Exorcist prequel, which is set to hit theaters on August 20th!

CLICK HERE to watch the trailer right now!

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Starring Stellan Skarsgård, Isabella Scorupco, Alessandra Martines, and James D'Arcy, the film traces the story of Father Lankester Merrin (Skarsård) back to his first encounter with the Devil in post-WW II Africa.