I really like this series. I like Kate and Henry a lot. We pick up six months after The Goddess Test ended. Kate is heading back to the Underworld after spending her six months above ground. She's really excited about being married the Henry and can't wait to see him again. She's Immortal, married, and inheriting new powers that she has no idea how to use. But on top of that, when she arrives in the Underworld, Henry isn't there to greet her. And when she does finally see him, he seems less than enthusiastic. Things are not going the way Kate expected at all. Then everyone finds out Calliope has gone insane, wants to kill Kate and release Cronus from his prison. Oh, and Henry's ex-wife (and Kate's sister) Persephone is back in the picture While parts of this story did drag (I'm sorry, I was more interested in the Kate/Henry dynamic than what was going to happen with Cronus and Calliope), the end was really good and I cannot wait for the next book. I love Mythology and I really like Aimee Carter's twist on the Greek myths.