On a summer afternoon, Canadian high school teacher David Williamson almost, but doesn't, runs into a mirror version of himself in his upstairs bedroom. Back downstairs, he finds that his world --rural Northwestern Ontario, near Lake Superior--has changed, and so has he, in subtle and not-so-subtle ways. While investigating this slightly altered world, David meets Caroline Reynolds. Caroline's ex-husband, Rey, is trying to kill her, and soon, Rey wants David dead as well. From a former student and a network of physicist friends, Caroline and David learn that they're traveling through the multiverse--multiple versions of the universe. And ominously, Rey seems to be in charge of their trip. THE ITERATIONS OF CAROLINE is the story of a woman growing into her power, the man who loves her, and the evil that pursues them both.