Erich Kästner's most astonishing book contains two unfinished novels and two letters about people who unexpectedly cross paths in life. The art historian Professor Mintzlaff travels to Switzerland to give a lecture. In a tea room, a certain Baron Lamotte sits at his table and claims to be able to read minds. Irritated, Mintzlaff tries to get rid of the strange man. However, Lamotte is not easily shaken off and accompanies the professor to the snow-glittering Davos, where they encounter not only Mintzlaff's eternal love but also his doppelgänger. Mintzlaff's world is turned upside down. As Lamotte increasingly displays truly Olympic powers, Mintzlaff makes a surprising discovery. Includes: The Sorcerer's Apprentice, The Doppelgängers, Letters to Myself.