Open Grave: Secrets of the Undead (4e)
Whispered tales speak of an eldritch tome crafted by necromancers and filled with spine-chilling facts about a vile menagerie of undead horrors - unnatural things known to haunt the gloom-filled corners of the world and beyond. Beware! This is that tome.
"This supplement for the DUNGEONS & DRAGONS Roleplaying Game explores the origins¸ tactics¸ myths¸ and lairs of undead creatures. Along with encounters and hooks for your campaign¸ it presents a host of undead threats¸ including new varieties of ghouls¸ skeletons¸ vampires¸ wraiths¸ and zombies. It also introduces new kinds of undead and provides statistics for unique undead villains such as Acererak and Vecna.