The Bureau of Paranormal Research and Defense faces its worst tragedy ever as the war against the plague of frogs reaches a devastating new level. Heralded by a bizarre villain from the B.P.R.D.'s past, an ancient monster-god marches across the American heartland portending an end to the reign of men, and leaving a permanent mark on the Bureau. The B.P.R.D. is changed forever in this story revealing secret names, visions, and dreams, a Nazi madman, and the death of a beloved agent.