El Asesino de Lady Gregor

Anthony Wynne wrote some of the best mysteries from the golden age of British crime fiction. This cunningly plotted novel, one of Wynne's best, is unprecedented in Spain. In an old castle in the Scottish Highlands, aristocrat Mary Gregor has been brutally murdered. The door to the room was locked from the inside, the windows blocked. On her corpse a single clue: a glowing fish scale.