Sometimes the things that go bump in the night are there to protect the innocent.Four hundred years ago, Tristain St. Blaise worked as an apprentice for alchemist Benito Achilles. An experiment went terribly wrong, fusing an entity to Tristain's soul, turning him from an enlightened man of reason to one of dark passions. Now, to find some measure of redemption, he wears the mantle of a hired killer, protecting innocents and ridding the world of men...