The narrative takes place in March 2020 , as the world begins to grapple with the COVID-19 pandemic, which adds a layer of isolation and tension to the plot. Key Features the highly awaited new novel by Dolores Redondo

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: Introduce the "Tranquil Valleys" (Valles Tranquilos) of Navarra and the Sima de Legarrea, a location steeped in actual historical and mythological significance.