Fritz London was one of the twentieth century's key figures in the development of theoretical physics. A quiet and self-effacing man, he was one of the founders of quantum chemistry, and was the first to give a phenomenological explanation of superconductivity. This thoroughly researched biography gives a detailed account of London's life and work in Munich, Berlin, Oxford, Paris, and finally in the United States. Covering a fascinating period in the development of theoretical physics, and containing an appraisal of London's work by the late John Bardeen, this book will be of great interest to physicists, chemists, and to anyone interested in the history of science.