The Medium (2021)

The Thai-Korean co-production that sent horror fans looking up Isan shamanism. Banjong Pisanthanakun directs and The Wailing's Na Hong-jin produces a mock documentary about a village medium in northeastern Thailand who serves as host to a local deity, Ba Yan, until a young woman in her family starts behaving strangely and something else seems to have moved in. It won the top prize at the Bucheon International Fantastic Film Festival in South Korea and reached Shudder in the United States. The found-footage style builds slowly and the final act is relentless, so this one demands the strongest stomach on the list. Not for anyone who wants their ghosts sad rather than savage.