Passage to Dawn: Dungeons & Dragons: Book 4 of the Legacy of the Drow Series (Legend of Drizzt)

It has been six years since the fateful Battle of Mithral Hall. For Drizzt Do'Urden and Catti-brie, this means six long years apart from their companions, and six long years of loss weighing heavily on their shoulders. But aboard Captain Deudermont's Sea Sprite, there's been no time for grief. Their days are consumed by the vastness of the Sword Coast, by salt spray and rolling clouds, and, more than anything, by the captain's relentless pursuit of pirates. Yet just as Drizzt begins to settle into the patterns of life at sea, he receives a strange message, the contents of which send him and Catti-brie back to the very source of their pain--and into the clutches of a demon with vengeance on his mind.