Underworld was an amazing book. Meg Cabot is a brilliant author and this book showed that. Although this book was not as good as the first book in the series Abandon it was still a great book to read. I loved how this book was about mythology and was a modern take on the myth of Persephone. The characters in this book were realistic and likeable. The main idea from the first book continued into this one but more details such as John's past, and more conflicts and characters were introduced. I really enjoyed this book and highly recommend it.