El pare de la Marina s'ha mort i ella ha de viatjar des de Londres fins a Barcelona per rebre una misteriosa herència. Resolent diferents enigmes amagats en els llocs més insospitats de la ciutat, la Marina descobrirà un secret que canviarà la seva vida per sempre. Però una ombra perillosa l'amenaça... T'apuntes al joc?David Prat is a young university student who, when returning from an Erasmus year, meets Marina Welles at the airport. They accidentally swap suitcases, and the confusion leads them to share a taxi. During the ride, David notices that the girl is nervous and anxious, as if danger was close at hand. Marina tells him that she lives in London and has returned to her hometown of Barcelona because her dad has just died. He has bequeathed the family home to her, along with a considerable amount of money and something else? Something very valuable and highly coveted... From here begins their adventure that takes them on a trail around the whole city, with the help of Bruna, David's teenage sister.A novel of intrigue set in Barcelona.