Sentenced to death by the Spanish Inquisition without knowing, a man finds himself in a dark cell inhabited by the rats. With horror he realizes that the middle of that dark place you open the terrifying abyss of a well. He imagines that the Inquisition has decided to let him die of hunger, but soon realizes that the cell is a terrible killing machine: a large overhead pendulum clock marks time, and its bottom is a shining scythe blade , that is coming down towards him in intervals thatseem like centuries ...