The Selkirk family is one of the seven Blessed bloodlines: true emissaries of God. Empowered through his seven archangels the Blessed families have protected mankind from demonic threats for over nine hundred years. As the seventh son of a seventh son Cadell Selkirk has power beyond that of his brothers and the other Blessed families. That power has made his demonic enemies fear him and mark him for destruction. Trained from birth to fight supernatural threats to mankind, Cadell and his brothers stand against diabolic forces that most people don