(Young adult fiction)Set in downtown Chicago and in the suburb of Villa Park, A Traveling Light is the story of fifteen-year-old Olive, whose father has recently left her and her mother, Gina. One afternoon, Olive meets a blind man named Argus on the Metra, and when they touch hands, she finds herself whisked away to another world--one that hasn't happened yet. Argus explains that the two of them are Constants, connected somehow in every life they live. Olive becomes obsessed with this second world, in which her family is intact, but she is destined to learn the same lessons from both the future and the present.