Van Richten's Guide to Vampires

Horror and vampires are synonymous. Players can now meet new and more powerful vampires. Complete descriptions of many different kinds of vampires and other undead. Everything you ever wanted to know about vampires but were afraid to ask. This accessory includes many new vampire personalities for your gaming experience.

From the back of the book:
At last some means of combatting the ultimate undead, vampires, have found their way into print. Within these pages, Dr. Rudolph Van Richten shares his vast background as one of Ravenloft's most formidable lore masters and vampire hunters. Decades of research and experience have been compiled into discussions which define the very nature of those "kings of the undead," and help put them at a disadvantage to mortals, whom they consider to be "mere cattle."
Dr. Van Richten has detailed vampiric powers, weaknesses, feeding and sleeping habits, even their varied relationships with others of their own kind. Old myths are dispelled, new facts are uncovered, and the experiences of both vampires and those you hunt them are recorded for your safety and enlightenment.

Quickly! Soon the sun sets and the dead will rise! The vampires of Ravenloft know no mercy, and you must be prepared before the darkness engulfs you.