The project is based on true story that inspired the 1970s horror classic 'The Exorcist.'

Dennis Widmyer and Kevin Kolsch, the duo behind the horror movie Starry Eyes, have signed on to rewrite and direct Exorcism Diaries for Lionsgate label Summit Entertainment.

Based on true story that inspired the 1970s horror classic The Exorcist, Diaries tells of a young woman, fresh out of rehab and looking to make amends, who discovers her family's horrifying connection to the most famous exorcism of all time may be the cause behind her brother's increasingly violent behavior.

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