2Claus y Lucas is a harsh and polyhedral portrait of human complexity that conveys both its innocence and cruelty. In a country at war occupied by a foreign army, two brothers, Claus and Lucas, are abandoned by their family and sent to live with their grandmother in a small village, but the cruelty of the wicked world in which they are forced to live seeps bit by bit into them, teaching the children to use any means in order to survive. Formed by the novels The Great Notebook, The Test and The Third Lie, the Claus y Lucas trilogy is a harsh portrait of the complexity of the human heart, an extraordinary book about the horrors of war and totalitarianism.