Title: The Blood of Angels - Michael Marshall - book
Summary :
Ward Hopkins, a former CIA agent, like Nina Baynam, on leave from the FBI, had no illusions: any victory against the Straw Men, a criminal organization with global ramifications, could only be temporary. The facts soon prove them right: mutilated corpses are found in Virginia, and disturbing threats are circulating on the Internet. It's impossible not to connect them to the sinister organization. Especially since Ward's brother, who is its mastermind, has escaped from prison where he was serving a life sentence. Nina's sudden disappearance sweeps away any remaining doubts: the Straw Men have taken up arms again...