The daughter of Marlene Dietrich, Maria Riva. Dietrich died last May at the age of 90, with her mystique still intact. Riva has written a memoir, "Marlene Dietrich," which relies on Riva's memories and on Dietrich's letters and diaries. It's been called a "sympathetic" book about a woman who is "uncaring," and who had a complex relationship with her own sexuality. Riva also describes her mother's decline into alcoholism.