The Parasite picks up where the dark vision of H. P. Lovecraft leaves off. The other children flee the attic leaving ten-year old Rose alone with an unspeakable thing—a thing which violates her horribly. So traumatic was the experience that Rose manages to expunge it from her conscious memory. Twenty years pass with only a vague sense of incompleteness to hint at the true horror residing deep within her. A sudden shock begins the release of Rose's latent psychic powers, but with this release, something else is awakened, a parasite, and with its awakening, the true horror begins…