When the bodies of five men are discovered in a secret vault at the villa Belle Epoque, suspicion falls upon the villa's former owner, enigmatic Pascal Deveraux.Actor, gambler, general good-for-nothing - Pascal has lived a life of privilege and excess. But with no evidence to implicate him in murder, the case goes unsolved.Called in to investigate the cold case, it's not long before Margot's enquiries re-open old wounds. Aided by policiere municipale, Alia Leon, the investigation moves swiftly from the smugglers' trails of the Pyrenees to the cannabis clubs of Barcelona. And it's there, in the dark medieval streets of the city's Gothic Quarter, that someone finds a reason to silence her.