Cainite Heresy: Sourcebook of Blasphemous Horror
This book specializes in something that had maybe 5 paragraphs in the main Dark Ages rulebook. The Cainite Heresy. A religion¸ that horribly twists Gnosticism and Christianity. Only a few clans follow it¸ and most of the members of those clans use it for power¸ not really believing in it. In a nutshell¸ it states that Vampires are not damned¸ but blessed.