Krell offers a fictional account of the last ten years of Nietzsche's life, the years of his paralysis and madness. Nietzsche's regression during those years, from one of Europe's leading intellectual lights to a passive mascot for his sister's "Nietzsche Archive," provides the frame for a narrative of his entire life.

The author uses all the available medical documentation and the entire collection of works and letters in order to paint his portrait. While Nietzsche has been the object of several attempts at fictional biography, no attempt to date has been based on such careful research: even the highest flights of imagination in this work are based on scrupulous reading and reflection.