From the critically acclaimed author of Jennifer Government and Lexicon comes 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 youIn every world." Young 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. Felicity Staples hates reporting on murdersAs a journalist for a mid-size New York City paper, she knows she must take on the assignment to research Madison May''s shocking murder, but the crime seems random and the suspect is in the wind. That is, until Felicity spots the killer on the subway, right before he vanishes. Soon, Felicity senses her entire universe has shiftedNo one remembers Madison May, or Felicity''s encounter with the mysterious man. And her cat is missing.