Scourge of the Valley. Heroes of the Valley, #5

An uneasy quiet settles across the Remordan Valley. No one trusts it. And they're right not to. Heroes become pariahs as another bout of supernatural-fueled violence erupts in the streets of the District Capitol. The people, worn-down by the cycles of terror, look for someone to blame. And the Heroes of Valley are forced to accept exile as the only tactic that will protect those they once defended. But the road to safety is treacherous.
Winged undead haunt the skies and hound their trail. Moldering battle-dead exhume themselves from ancient mass graves to bring war upon the living. And their destination, the storied Fey Realm of Mauvynn, is not without its dangers or divisions. The half-elf warrior-priestess will face a homeland gone corrupt. The onetime wizard's apprentice will despair of ever escaping another woman's destiny. And the Legion veteran will drag the half-hobgoblin, gnome politician, and heartsick sorcerer along with him in their defense. But nobody's coming to help.
They're Heroes no more. The people now know them and fear them as. .the Scourge of the Valley.