Apt Pupil by Stephen King

Explores the seductive and corrupting nature of evil through the relationship between a curious teenager and a hidden Nazi war criminal.

This book contains: alcohol/addiction, animal cruelty (aberrant/graphic), blackmail, body horror, bullying, deception, derogatory terms, deviant content, drugs, dubious consent, cannibalism (implied), controversial cultural, gender and racial commentary, fetish, genocide/Nazi atrocities, gore, hate, mental illness, misogyny, murder (excessive/graphic), psychological corruption, potentially patently offensive content, potentially prurient content, profanity, racism, rape, sadomasochism, sex toys, sexual activities/nudity (obscene and aberrant), sexual assault, smoking, suicide, torture, violence, and voyeurism.