From publisher blurb:
Twenty-five years ago the lich Polivar the Bloodthirsty was sentenced to be sealed away forever for his crimes. With him was buried an artifact promising mortality. His tomb is about to be disturbed...
Blood Tomb is an introductory adventure involving battling river pirates, a trek across a marsh, and a lost tomb; all while being pursued by a wizard seeking the amulet the adventurers carry, an amulet leading to an artifact that several parties want.
The appendix contains an npc pirate class, as well as a minor artifact (both open game content).