From publisher blurb:
The Vampire Class for Basic Era Games
They have haunted our myths and legends since time began.
They have been a staple of role-playing villains, monsters, and anti-heroes since the dawn of the role-playing hobby.
Now you can play these fearsome monsters of horror tales in your Basic-Era style games.
Presented here is a full 20 level class with all the classic vampiric powers.
Fully compatible with the vampire monsters you have been using for nearly 40 years.