The world above may be over, and Hellboy gone with it, but Koshchei is
still in Hell content with his wine and his books--until an old face
arrives and brings Koshchei a critical task.
An old and powerful foe is returning, and Koshchei must take up his
sword and defend the city from destruction.
Mignola returns to Hell to reunite with one of his favorite
collaborators, Ben Stenbeck (Frankenstein Underground, Witchfinder
In The Service of Angels, Baltimore, Koshchei the Deathless).
Collects Koshchei in Hell #1-#4, Sir Edward Grey: Acheron one-shot,
and bonus material.