Demon possession, devilish cheerleaders, and satanic rock stars are all on the chopping block with this horror comedy from the production team behind JUNO. Screenwriter Diablo Cody provides the script, with producing duties handled by Jason Reitman and Dan Dubiecki. The story centres on Needy (Amanda Seyfried - MAMMA MIA!), an impish high-school student, who has to protect her town against her beautiful but dangerous best friend Jennifer, (Megan Fox - TRANSFORMERS), whose lithe body hides a hungry demon. After being bedevilled by a Satan worshipping rock band, the sexy cheerleader develops a taste for human flesh and starts targeting male students, while the seemingly powerless Needy looks in terror. GIRLFIGHT'S Karyn Kusama directs this Fox Atomic production that also stars Adam Brody, J.K. Simmons, and Amy Sedaris.