"The third book in Zafon’s Cemetery of Lost Books series is a direct sequel of the first, taking us back into the world of Daniel Sempere, his elderly father and their bookshop. This is a bit of a relief after the darkness of The Angel’s Game, especially as Daniel’s friend Fermín is a central character who brings much levity into the lives of his friends in Barcelona. The story jumps backwards into the early life of Fermin when he was imprisoned during the Civil War in Montjuic Castle - still an important monument in Barcelona, with a grim history. This makes Prisoner of Heaven an ideal read for tourists in Barcelona as the mountain itself is a must-see destination. Tours of the fortress are available. My suggestion is to take most of a day for your visit, ascending by way of the huge outdoor escalators and returning via the cable car for panoramic views over the city. While you are there you can tour the magnificent Museum of Catalonian Art with its huge collection of art both ancient and modern. Reading Prisoner of Heaven will give you a very personal insight into the atrocities of the Spanish Civil War - even though Zafon’s characters are fictional. A visit to Montjuic, whether or not you tour the castle, will be a highlight of your time in Barcelona."