Since "The Leech" can refer to several popular media titles and products, here are the most helpful reviews for each to help you find what you are looking for:

: Reviewers describe it as a claustrophobic psychological drama that transforms into a "fever-dream weird" and "brutal" spectacle. It is noted for its off-kilter cinematography and dark humor.

: It holds a solid reputation for fans of religion-themed horror, with critics from Rotten Tomatoes and Horror DNA praising its "satisfying third act" and tense, uncomfortable vibes.

: Readers on The StoryGraph and Reddit rave about the "vivid elements of folklore" and unique body horror. The world-building and isolated setting are frequently cited as highlights.

This debut novel is a post-apocalyptic gothic horror about a parasite that has replaced the consciousness of every doctor in the world.

: A common critique is that the second half "loses steam" or shifts away from its unique medical mystery toward more conventional character drama, which some found disappointing.

This holiday horror-comedy directed by Eric Pennycoff follows a devout priest who invites a struggling couple into his home, only for things to spiral into a "sin-filled fever dream".