HORNED JACK: THE EARLY YEARS by M. R. Williamson

Horned Jack is the son of a Nephilim, one of those who takes the daughters of men for their wives. He watches, and he waits. Although he may be thought of as a “watcher in the woods,” he lives hidden among us. He strives to become
something better—but will his ancestry spoil his efforts? This is the story of his
early years, and of those growing pains, and the effects he has on those around him.
 
Novels in this series:
Horned Jack:  The Early Years
Horned Jack:  The Nephilim Chronicles
Horned Jack:  Never Say Never