Gray Matter (2017) is a Horror film that follows a group of locals at a liquor store brave a winter storm to check on Richie (Larry Fessenden) a regular customer who hasn't left his house in months and - according to his terrified son - has been slowly "changing shape". What waits for them inside the house, in the dark, is beyond their wildest nightmares. Gray Matter is not currently listed with streaming providers in your selected region, but availability can change over time. It has a user rating of 10.0 out of 10 from 1 votes. Fans of horror movies may also want to explore similar titles below.