What a thrill ride!
The author does an excellent job of creating each character, then he lets you into their heads. I found myself even sympathizing with the dirt bag characters, at several points in the story.
Compassion comes easily for families in law enforcement, especially the Mitchell family with their autistic boy, turned hero, when he discovers his special abilities.
You will enjoy the rich detail the author skillfully uses to bring his readers into the story.
Shadow Boy may not be appropriate for young readers. Those disposed to taking advantage of that group will be brought to task and made to feel like the predators they are.