The year is 1750. Tristan Hart, precociously talented student of medicine practising under the legendary Dr William Hunter. His obsession is the nature of pain and preventing it; the relationship between mind and matter and the existence of God. A product of the Age of Enlightenment, he is a rational man on a quest to cut through darkness and superstition with the brilliant blade of science. Tristan Hart, madman and deviant. His obsession is the nature of pain, and causing it. A product of an age of faeries and goblins, gnomes and shape-shifting gypsies, he is on a quest to arouse the perfect scream and slay the daemon Raw Head who torments his dark days and long nights.