'The Parasite' is a short, psychological thriller from Sherlock Holmes author Sir Arthur Conan Doyle. Professor Austin Gilroy is deeply dubious about the genuine powers of hypnotism. When his colleague introduces him to psychic Miss Penclosa in an attempt to change his mind, Gilroy finds to his horror that his scepticism was ill-founded as he becomes trapped under her spell. Will he be strong enough to break free of the hold she has over him?-