The listing, Angel Souls and Devil Hearts (Book 2 of the Shadow Saga) by Christopher Golden has ended.
This is an excellent vampire series. Very different take on vampires. If this is your first Christopher Golden book in the Shadow Saga, I would highly suggest reading the series in order. (1) Of Saints and Shadows (2) Angel Souls and Devil Hearts (3) Of Masques and Martyrs and (4) The Gathering Dark. I enjoyed this series as much or even more than the anita blake and tanya huff series. Highly recommended.
Book #2 continues where book #1 ended. At the end of book 1, the world found out that vampires really do exist. The world is also very sympathetic to vampires because in book 1 a few evil members of the church tried to have them exterminated, and all of it was caught by a news crew. Vampires now have rights in the world. Counsels have been formed to help vampires and humans work and live together.
But things are not as "perfect" as they seem. Hannibal one of the vampire leaders is upset at the new life of the vampire. He liked the vampires of old, attacking the humans, killing them. He doesn't want to be their friend, he wants to hunt them. Hannibal secretly starts to build his own army of evil vampires. He has plans to attack when the time is right.
Also, as usual with this series, a variety of characters are involved in different things. In Book 1 you met Wild Bill Cody and the famous news reporter Allison. They are now a couple, and taking a vacation. While on vacation, they come across some demonic incidents and then the evil villain from Book #1 makes a return appearance. This book is about the fight between the evil versus good vampires; and the evil demons in hell.