After a frightful first year of marriage, psychotherapist Piper Adler is putting her life back in order. She’s been offered her own TV show, Talk Therapy, giving advice to millions of viewers around the world. Her relationship, friends, and career are all starting to come together. All seems to be going perfect until her patient-turned-friend, the forensic expert Keely Brock, attends a party on a yacht in the Mediterranean and goes overboard. Missing for nearly a year, Piper presumes she’s dead, until she receives an anonymous text saying Keely is alive and living on the French Riviera. Determined to find out if the woman in question is Keely, Piper boards a plane headed for Monaco. What begins as a quest for truth may end with Piper’s life on the line, as once she tracks the woman down, she doesn't seem to know who Keely is, let alone remember Piper. If this lookalike isn’t her, then who the hell is she? And what happened to Keely?