Apostle is a 2018 Gothic folk horror film written, directed and edited by Gareth Evans, and starring Dan Stevens, Lucy Boynton, Mark Lewis Jones, Bill Milner, Kristine Froseth, Paul Higgins and Michael Sheen. It had its world premiere at Fantastic Fest in September 2018, and began streaming on Netflix on October 12, 2018. The story follows a British man as he attempts to rescue his sister from a cult on a remote island. The film received generally positive reviews from critics.

Plot

In 1905, Thomas Richardson travels to a remote Welsh island to rescue his sister, Jennifer, who has been kidnapped and held for ransom by a mysterious cult. Posing as a convert, Thomas encounters the leader, Malcolm Howe, who founded the cult with two other convicts, Frank and Quinn. They claim that the barren island was rendered fertile through blood sacrifice. Thomas discovers Frank's son Jeremy and Quinn's daughter Ffion sneaking home after a tryst. He forces Jeremy to admit that Jennifer was kidnapped for ransom, as the cult does not have the resources to pay for the continuous animal sacrifices needed to maintain the island's fertility.