The Shadow of the Wind by Carlos Ruiz Zafón

Mostly mystery, but also part love story, book lovers everywhere should read The Shadow of the Wind. Our hero is a young man named Daniel who grows up working in his father's bookstore and who finds himself driven to discover all that he can about an enigmatic author whose book he adopts from the Cemetery of Forgotten Books. Along the way he encounters people almost as strange and mysterious as the author whose story he's trying to track down--he makes decisions which have strange outcomes and accidentally falls in love on the journey.

Though die-hard mystery fans might find this plot too predictable, the rest of us should enjoy the bookish premise, the setting and characters, and take on the adventure without really trying to guess the end.