A.S. Chambers 
Bobby Normal and the Children of Cain [EPUB ebook] 

The adventures of Bobby and Katy continue as they travel across the Divergent Lands. Now accompanying the Children of Cain, vampires who failed in their oath to protect humanity, they are drawn even further into the hunt for the true Virtuous Man.

However, there is a problem. The supposed saviour of humanity, one Sam Spallucci, was supposed to have died two thousand years ago.

Plus, to make matters worse, tragedy and betrayal lurk just around the corner.