In the heart of Barcelona, in an abandoned mansion, a young man named David Martín makes a living by writing romantic novels under a pseudonym. Haunted by his difficult childhood and tormented by an impossible love, he has found refuge in the world of books, spending his nights inventing baroque stories about the city's underworld.

One day, his footsteps lead him to a secret locked room, where he discovers photographs and letters that speak of the mysterious death of the previous owner of the house. David decides to unravel the case that slowly poisons his existence like a slow poison. The parallel proposition of a French publisher to write a book that has never existed before, in exchange for a fortune and something more, will further complicate things. Soon David will realize that he is surrounded by shadows that threaten his own life.

The magician of Spanish literature takes us once again to the Cemetery of Forgotten Books, in a gothic adventure of love and mystery, set against the atmospheric and dark backdrop of Barcelona.

Translated into 38 languages. 3,350,000 copies worldwide.