Historians agree: the diary of L on Werth (1878-1955) is one of the most precious--and readable--pieces of testimony ever written about life in France under Nazi occupation and the Vichy regime. Werth was a free-spirited and unclassifiable writer. He is the author of eleven novels, art and dance criticism, acerbic political reporting, and memorable personal essays. He was Jewish, and left Paris in June 1940 to hide out in his wife's country house...