From publisher blurb:
Written for the 5th edition of the world's most popular roleplaying game. The Grave Knight Leonidas Uviir has returned from a hundred-year absence and now seeks to recreate the Androsan Empire through conquest, and subject all of the former lands to his despicable rule. To that end, his undead army has laid siege to Lorcastle, where he intends to create a bastion, and retake the empire that fell a hundred years ago. It is up to the PCs to defeat him in battle and turn the tide before it's too late. However simply killing him is only the beginning, for a graveknight is only truly destroyed when its armor is unmade. The characters must then journey to the temple of the snake-like Nkoll, and then defeat numerous subterranean challenges so they can challenge him a second and final time, and ending the tyranny of Uviir once and for all.
Knight of the Grave was designed by Darrin Drader, who designed the official Death Knight for the third edition of the world's most popular roleplaying game, as well as the original graveknight for Paizo Publishing, for the first edition of the Pathfinder roleplaying game. The graveknight has been fully converted to 5th edition and is designated as open gaming content.
This adventure is designed for characters of 17th level.