A police officer finds himself trapped in a remote, hostile environment where ancient, unsettling traditions threaten his survival. David Pinner constructs a narrative centered on a protagonist who encounters a community defined by rigid, archaic customs. The story utilizes a mounting sense of dread as the protagonist attempts to navigate the logical constraints of a world that operates on belief systems alien to his own. The narrative framework emphasizes the isolation of the setting, forcing the character to confront forces that prioritize ritualistic adherence over individual safety.

Discussion often centers on the novel's status as a foundational text for the folk horror subgenre. Readers frequently highlight the unsettling atmosphere and the effective use of isolation to heighten the protagonist's vulnerability. Critics often note the stylistic focus on the psychological erosion of the main character as he encounters a community that rejects his worldview. The narrative is widely recognized for its influence on later cinematic works, particularly regarding the depiction of ritualistic sacrifice and rural menace. Many readers appreciate the book for its ability to maintain a consistent sense of unease throughout the narrative.