The Medium (Thai: ร่างทรง Rang Song, literally: Mediumship) is a 2021 Isan-language mockumentary supernatural folk horror film[2] co-written and produced by Na Hong-jin and directed by Banjong Pisanthanakun.

[1] A documentary crew travels to the Isan region of Thailand to interview Nim, a medium who claims to be possessed by the spirit of Ba Yan, a local deity.

Nim attends the funeral of Noi's husband Wiroj, who had died of a heart attack, and reveals that misfortune had befallen the men in his family.

In the days leading to the ritual, Mink creates havoc at home by briefly abducting Manit's son, boiling her family's dog alive and eating it, among other things.

Meanwhile, the possessed Mink has been locked in her room and the door is sealed with paper charms; Manit's wife and others keep watch to ensure she stays inside until the ritual is complete.

Now possessed by evil spirits, Noi momentarily claims to be Ba Yan's host when she chants a prayer while touching her daughter's head, attempting to exorcise her.

[5] The film was made available for streaming and broadcasting in South Korea on IPTV, Skylife, HomeChoice cable TV, KT Seezn and others from September 16, 2021.

Describing the scary parts of the film, Yeon-kyung wrote, "The scariest thing is that the closer you get to the ending, the more you are getting used to the huge scene unfolding before your eyes.

"[17] Seo Jeong-won writing for Maeil Business praised the performance of Narilya Gunmong Konket and opined, "I am so immersed in acting that I have to worry about the trauma that can occur."

Warning the audience about some portions of the film that showed cannibalism, animal cruelty, self-harm, and incest, Jeong-won wrote that they are careful as they might find it cruel.

[18] Kong Rithdee gave the film a positive review in the Bangkok Post, praising its use of Thai folklore with the visual and narrative resemblance to South Korea thrillers.

[19] Choi Young-joo of CBS No Cut News wrote that the film directed in the form of found footage, has a documentary character.

[20] Variety praised the film's musical score, production design, and references to Thai culture, but criticized its length and the mockumentary format.