'The Black Book' series spans several centuries in an epic tale of good against evil; From the Old Wild West to the Earth's fragile future. 'The Devil's Blood' introduces Sheriff Jack, a time-travelling loner on a life-long quest to find humanity's last hope; The mysterious Black Book. Sheriff Jack's first encounter with his adversary brings nothing but bloodshed in its wake, and leaves the Sheriff fighting for his life. Not unexpected, when his enemy is the Devil himself.