The Shadow of the Wind by Carlos Ruiz Zafón

Follows a boy's quest to uncover the dark history of a forgotten author, only to find that their stories are deeply intertwined.

This book contains: abortion (discussed), alcohol, alternate gender/sexual ideologies (minor, includes drag queen), blackmail,
death (includes animals and a baby), deception, derogatory terms, drugs, explicit sexual activities/nudity, gore, imprisonment, incest (accidental), misogyny, molestation, murder, oppression, potentially patently offensive content, profanity, prostitution, rape/sexual assault, sexism, smoking, stalking, stealing, suicide, torture, toxic
relationships, violence and voyeurism.