SPOILER ALERT: the following article contains massive spoilers, including the ending. If you have not yet seen the movie, proceed at your own risk, or better, come back to this article later!
SPOILERS AHEAD
The Forever Room Plot Summary and Synopsis
Claire wakes one day to find herself chained in a basement. Her horror is amplified when she discovers that her captor is her own mother! Helen assures Claire that the situation is necessary and “for her own good.” And to add to Claire’s terror, in the days and nights to follow she is beset by strange apparitions and frightening experiences, finding herself precariously balanced on a razor’s edge between reality and insanity, and ultimately forced to face a dark truth.
Source: Wikipedia (CC BY-SA 3.0).