Z by Michael Thomas Ford

A teen joins an underground zombie-hunting game , only to discover the targets are real people being harvested for a street drug , forcing him to fight for his life. 

This book contains: alcohol abuse (minor referenced), blackmail, body horror, bullying, cannibalism  (themes), child abuse (themes), death/grief, deception, derogatory terms, drugs, gore, kidnapping, murder, profanity (minor), smoking, torture, toxic relationships, trauma, violence and voyeurism.