Blood Line - Andrew Vachss - Bog

"In the world of dangerous men, a blood line is a cause passed from generation to generation from master to protâegâe. But on the path to becoming a master, each protâegâe must find their own hunting ground. When a young girl is lured away by an Internet predator, the young protâegâe of an assassin who never leaves a trace decides to leave his own mark by hunting down sexual predators targeting vulnerable teens who are bullied and feeling unwanted. As Sonny discovers his own cause his own reason for existence and a skill set beyond anything his master taught him, he steps out of the shadows and joins a long blood line of masters seeking justice on behalf of defenseless children"--FantasticFiction.com.