Helen Clapp's breakthrough work on five-dimensional spacetime landed her a tenured professorship at MIT; her popular books explain physics in plain terms. Helen disdains notions of the supernatural in favor of rational thought and proven ideas. Then, on an otherwise unremarkable Wednesday in June, she gets a phone call from Charlotte Boyce, a friend who has just died. As the years passed Charlie had become elusive, her calls less frequent. Helen is drawn back into Charlie's orbit, awakening feelings she once had for Neel Jonnal, an acclaimed physicist on the verge of a Nobel Prize winning discovery. -- Adapted from jacket.