Eternal Rider is the first book in the Lords of Deliverance series, which is a spin-off to the fantastic Demonica series. While Demonica was about demons, Lords of Delivarance is about the four horsemen of the Apocalypse. The first book is about Ares, who is to become the second horseman War. The whole world is wonderfully imaginative. There's so much interesting lore that even though after reading Demonica, which was more erotica than romance, I came to expect lots more sex in this book. Of course, there's enough hot and heavy stuff in this book, but it's mostly in the second half of the book.