Hyacinth Finch's life-after-death just got more complicated. High on her to-do list: Stop Satan from stealing any more of Archangel Michael's powerful relics, marshal her Dead Army of two thousand souls, and recapture dozens of escaped Hell Demons, to prevent six thousand dead Nazis from wreaking havoc in the world. And on top of all that, her onetime ghost boyfriend has hijacked the body of a former German militant, which has its ups and downs for their relationship.
 
Then, just when things seem to be under control, her nephew Geordi's powers start leaking out, and Hyacinth's own begin to change. She must discover where their abilities originated. But as she digs deeper, will the truths she uncovers do more harm than good? And more importantly—can she figure it out, before Satan escapes from Hell and takes Geordi for himself?