 At the same time, it becomes public knowledge that the supposed Edwardes is an impostor, and that the real Edwardes is missing and may have been murdered.Petersen manages to track him down and starts to use her psychoanalytic training to break his amnesia and find out what really happened.Pursued by the police, Petersen and the impostor (calling himself John Brown) travel by train to Rochester, New York, where they stay with Dr. Alexander Brulov, Petersen's former mentor.