Hidden in the heart of the old city of Barcelona is the 'cemetery of lost books', a labyrinthine library of obscure and forgotten titles that have long gone out of print. To this library, a man brings his 10-year-old son Daniel one cold morning in 1945. Daniel is allowed to choose one book from the shelves and pulls out 'La Sombra del Viento' by Julian Carax.

But as he grows up, several people seem inordinately interested in his find. Then, one night, as he is wandering the old streets once more, Daniel is approached by a figure who reminds him of a character from La Sombra del Viento, a character who turns out to be the devil. This man is tracking down every last copy of Carax's work in order to burn them.

David Martín is a pulp fiction writer struggling to stay afloat. Holed up in a haunting abandoned mansion in the heart of Barcelona, he furiously taps out story after story, becoming increasingly desperate and frustrated. Thus, when he is approached by a mysterious publisher offering a book deal that seems almost too good to be real, David leaps at the chance. But as he begins the work, and after a visit to the Cemetery of Forgotten Books, he realizes that there is a connection between his book and the shadows that surround his dilapidated home and that the publisher may be hiding a few troubling secrets of his own.

Barcelona, 1957. It is Christmas, and Daniel Sempere and his wife Bea have much to celebrate. They have a beautiful new baby son named Julian, and their close friend Fermín Romero de Torres is about to be wed. But their joy is eclipsed when a mysterious stranger visits the Sempere bookshop and threatens to divulge a terrible secret that has been buried for two decades in the city's dark past.

His appearance plunges Fermín and Daniel into a dangerous adventure that will take them back to the 1940's and the dark early days of Franco's dictatorship. The terrifying events of that time launch them on a journey fraught with jealousy, suspicion, vengeance, and lies, a search for the truth that will put into peril everything they love and ultimately transform their lives.

"En la Barcelona de finales de los aanos 50, Daniel Sempere ya no es aquel niano que descubriao un libro que habraia de cambiarle la vida entre los pasadizos del Cementerio de los Libros Olvidados. El misterio de la muerte de su madre Isabella ha abierto un abismo en su alma del que su esposa Bea y su fiel amigo Fermain intentan salvarle. Justo cuando Daniel cree que estaa a un paso de resolver el enigma, una conjura mucho maas profunda y oscura de lo que nunca podraia haber imaginado despliega su red desde las entraanas del Raegimen. Es entonces cuando aparece Alicia Gris, un alma nacida de las sombras de la guerra, para conducirlos al corazaon de las tinieblas y desvelar la historia secreta de la familia... aunque a un terrible precio."