Konstantin von Villing confesses: He has his aunt's death on his conscience. Hanged. In a closet. But on the estate in the Knielingen district of Karlsruhe, there is neither closet nor body. And it gets even more mysterious: all the buildings are completely emptied; not a single piece of furniture remains. Commissioner Oskar Lindt can almost feel the proximity of death in the old sandstone walls. And he can rely on his instincts.