This book was a disappointment. I normally quite enjoy the 100 Kingdoms books; they're fun and funny and light. This one managed to flop miserably. The first 2/3rds dragged on and on and nothing happened-- and I was never, ever sold on the romance between Persephone and Hades, which is a pity because there were a few very charming flashes that could have been very good. Then the last 1/3rd jammed six million things in all off stage, and the deus ex machina of Hectate was really really lame.
The most entertaining part of the book was Brunhilde and Leo, and they were side characters from another book!