What is it about this book?
Background: DS1 reads, but is not the keenest reader, and always seems to be able to find something he'd rather be doing than reading. When he does read, it's usually books about zombies with words like fear, death or enemy in the title.
This book was recommended by friends at school. DS1 put it on his wishlist for his 14th birthday. When no one gave it to him, he used his birthday money to buy it. He is now reading it in preference to staring at a screen.
What is going on?