as a result of his involvement in espionage against the government during the Civil War. After being hired as an assistant in his father's bookshop, he helps Daniel investigate the mystery of Carax. But their probing into the murky past of a number of people who have been either long dead or long forgotten unleashes the dark forces of the murderous Inspector Fumero. Thus, unravelling a long story that has been buried in the depths of oblivion, Daniel and Fermín come across a love story, the beautiful yet tragic story of Julián and Penélope, both of whom seem to have been missing since 1919—that is, nearly thirty years earlier. Julián, who was the son of the hatter Antoni Fortuny and his wife Sophie Carax, and Penélope Aldaya, the only daughter of the extremely wealthy Don Ricardo Aldaya and his beautiful, narcissistic American wife, developed an instant love for each other. They lived a clandestine relationship only through casual furtive glances and faint smiles for around four years, after which they decided to elope to Paris, unaware that the shadows of misfortune had been closing in on them ever since they had met. The two lovers are doomed to unknown fates just a week before their supposed elopement, which is meticulously planned by Julián's best friend, Miquel Moliner—also the son of a wealthy father. It is eventually revealed that Miquel loved Julián more than any brother and finally sacrificed his own life for him, having already abandoned his desires and his youth for causes of charity and his friend's well-being after his elopement to Paris -- although without Penélope, who never turned up for the rendezvous. Penélope's memory keeps burning in Julián's heart, and this eventually forces him to return to Barcelona (in the mid 1930s); however he encounters the harsh truth about Penélope, nothing more than a memory to those who knew her since disappearing in 1919. Daniel discovers, from the note Nuria Monfort (the wife of the deceased Miquel Molinar) left for him, that Julián and Penélope are actually half-brother and sister; her father had an affair with his mother and Julián was the result. The worst thing he learns is that after Julián left, Penélope's parents imprisoned her because they were ashamed of her committing incest with him and she was pregnant with his child. Penélope gave birth to a son named David Aldaya, who was stillborn. Penélope