Posing as a college teacher, guardian angel Harry Mills is on a mission to help 24-year-old Addie Folsom get her life together---and find love! But when Addie crosses paths with old acquaintance Erich Simmons, she braces for trouble. Can two seemingly incompatible people be right for each other? Will an angelic professor work a Christmas miracle? 272 pages, hardcover from Ballantine.