My Best Friend’s Exorcism: Release date, cast, synopsis, trailer & more

My Best Friend’s Exorcism is a horror movie following the lives of two best friends in 1988. After an incident one of them starts acting bizarre, and the other believes there is a demon inside her. 

Release date

My Best Friend’s Exorcism is set to premiere on September 30 on Prime Video. 

Cast and creators

  • Christopher Lowell
  • Elsie Fisher
  • Amiah Miller
  • Clayton Royal Johnson
  • Cathy Ang

Directed by Damon Thomas 


“The year is 1988. High school sophomores Abby and Gretchen have been best friends since fourth grade. But after an evening of skinny-dipping goes disastrously wrong, Gretchen begins to act…different. She’s moody. She’s irritable. And bizarre incidents keep happening whenever she’s nearby. Abby’s investigation leads her to some startling discoveries-and by the time their story reaches its terrifying conclusion, the fate of Abby and Gretchen will be determined by a single question: Is their friendship powerful enough to beat the devil?

Other details

My Best Friend’s Exorcism is based on the 2016 horror novel of the same name by Grady Hendrix. 


Abby and Gretchen have been best friends forever. After a swim in an eerie lake goes wrong, Gretchen begins to act strange and bizarre, and possibly satanic. Abby believes that there is a devil inside her. She is told that performing an exorcism is the only way to bring Gretchen back.

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