Curse of the Valley - Heroes of the Valley, #6

Tragedy haunts the Heroes of the Valley. It has dogged them from their homes in the Remordan Valley to the war-torn Elven Lands of Mauvynn, where the shadow of an undead menace lingers, and the death of a companion torments the survivors. Weighted down with grief, they fragment and drift. But there's never been a moment they've needed unity more. Death is deception. And an enemy they thought defeated schemes once more.
From his long-lost domain, he plots a final confrontation, a final vengeance upon those that have thwarted him so many times before. The Heroes will have to pull together, one more time. For each other. For the one they've lost - and may have again. They must break the Curse of the Valley.