My Best Friend's Exorcism

“True friendship is worth going to hell and back.”

In 1988, after a night of skinny-dipping goes badly wrong, Gretchen Lang (Amiah Miller) starts acting like someone else. Her best friend since fourth grade, Abby Rivers (Elsie Fisher), becomes convinced a demon is living inside her. Damon Thomas follows Abby as she recruits a few unlikely allies, and the real fight is whether the friendship between the two girls is strong enough to hold.