A professor of literature and a Holocaust survivor, Raphael longs to talk to his mentor Pedro, the man who rescued him as a 15-year-old orphan from postwar Poland and brought him to Paris. But Pedro disappeared inside the Soviet gulags shortly after the war, and Raphael doesn't know where to begin. But in this novel by the author of Night, a mysterious nighttime caller directs Raphael's search to the Mountain Clinic, where—amid patients calling themselves Adam, Cain, Abraham, Jeremiah, and God—Raphael seeks Pedro's truth and the meaning of his own survival.