Lost Souls Eternal

Adventure description from front page "You find yourselves in a race against time and the servants of an ancient foe with an island of ill-repute as your destination. Your mission is to discover, and return with, what your rivals wish to obtain... if you can. Fighters, clerics and diplomats are highly recommended. Not recommended for those with a fear of the sea or a dislike for water. An adventure for characters of Average Party Level 6 through 14."