As days pass and tension rises, Melissa begins to suspect that the horrors outside are not just a storm, but the supernatural result of a "necromancy spell" she performed with her girlfriend, Amy.

Directed by Sean King O'Grady and based on the novella by Max Booth III, the film is a claustrophobic "chamber thriller" set almost entirely in a single room.

If you are looking for a guide to this psychological horror film,