Gareth Evans' 2018 film Apostle is a gripping period horror thriller that masterfully blends folk horror, mystery, and visceral tension. Set in 1905, the story follows Thomas Richardson (Dan Stevens), a tormented drifter who travels to a remote Welsh island to rescue his sister, who has been kidnapped by a mysterious religious cult. To infiltrate the community, he must pose as a convert, uncovering layers of dark secrets, twisted faith, and a malevolent supernatural force tied to the land itself.

Dan Stevens delivers a compelling, intense performance as the determined yet vulnerable protagonist, while Michael Sheen is chillingly charismatic as the cult's enigmatic leader, Malcolm. The film's direction is atmospheric and deliberate, building dread through stunning yet oppressive cinematography that captures the island's eerie beauty. The slow-burn narrative escalates into shocking, brutal sequences that will unsettle horror fans.

Viewers should watch Apostle for its unique take on cult horror, rich historical setting, and thought-provoking themes of faith, corruption, and sacrifice. It's a visually striking and psychologically tense experience that stands out in the genre. Available to stream online, this film offers a satisfying blend of cerebral mystery and visceral horror for those seeking a memorable, chilling watch.