Blood Oath is a book that combines vampirism and politics. According to history, there was a person that was pardoned for being a bloodsucker by President Andrew Jackson. The vampire in this story, Nathaniel Cade's assignment is to protect the president at all costs and he has been sworn not to hurt either the president or any of the agents working with him. Cade actually refuses to drink human blood at all and exists by drinking animal blood. Into the picture comes Zach Barrows, who is assigned to be Cade's handler. Needless to say Zach is very ambitious and is not too happy with this career choice that is virtually forced on him. He reluctantly resigns himself to the fact that he has to do this. This assignment also means that he will not advance any further in his career. Reason? Zach has top clearance and he is not to let anyone know what he is doing. At first Zach is frightened in regards to Cade and grudgingly comes to respect the vampire for what he is able to do. He comes to find out that there are conspiricies to take over the U.S. Government. What ensues is a sometimes gory race to stop these conspiracies and find out who is behind them. There are people who have assembled zombies from body parts stolen ,or obtained illegally, and their only reason for existing is to kill all who get in the way of their goal. This goal is to kill the president and his family and the evil people can take over the government. As Zach and Nate get to know each other they become a formidable team..
Other characters in this story are Konrad, an evil German scientist who is the person who put these zombies together,a modern day Dr. Frankenstein, Tania, a female vampire enamoured with Cade. There is Agent Griff, who has been working with Cade for the last 40 years and Griff becomes a mentor of sorts for Zach. The characterizations are very realistic and the story line is very plausible. I enjoyed this book and look forward to the rest of the series. Would make a great tv show!!!