The Labyrinth of the Spirits By: Carlos Ruiz Zafron

WOW!  An amazing addition to the Cemetery of Lost Books series.  This one is more violent than the others, but the intrigue will grip you and not let go until the very end.  Zafron's Barcelona and it's denizens are such a vital part of this series.  This thriller follows Alicia and her shadowy job, but, of course, she is tied to the Sempere family and their extended class. I can't rave enough about this book!!  Just stunning!