This is a mind-bending speculative psychological suspense about a serial killer pursuing his victim across time and space, and the woman who is determined to stop him, even if it upends her own reality. "I love you. In every world." Real estate agent Madison May is shocked when a client at an open house says these words to her. The man, a stranger, seems to know far too much about her, and professes his love - shortly before he murders her. A journalist for a midsize New York City paper, Felicity Staples is assigned to the murder. The crime seems random, but after Felicity spots the killer on the subway her entire universe shifts. It's a world where no one remembers Madison May. In her pursuit of Madison's killer, Felicity followed him into a different dimension. When Madison May, in this world a struggling actress, is murdered again, Felicity decides she must find the killer - and learns that she is not the only one hunting him.