Shorter but definitely darker than [b:The Shadow of the Wind|1232|The Shadow of the Wind (The Cemetery of Forgotten Books #1)|Carlos Ruiz Zafón|http://d.gr-assets.com/books/1344545047s/1232.jpg|3209783] and [b:The Angel's Game|4912857|The Angel's Game (The Cemetery of Forgotten Books, #2)|Carlos Ruiz Zafón|http://d.gr-assets.com/books/1320470394s/4912857.jpg|3252824]. I wish someone made an animation based on the book, it has tons of potential. Or maybe a film, since most of the places described are real, but I'd rather see animated creepy creatures than horror-like ones.
Anyway, a fan of the novel made this video
of the places in Barcelona mentioned in the book. I totally love the song and have no idea who sings it. I might just google a bit. Apparently it's Sia's My Love.