Puzzle

Peter has had a car accident which has left him with amnesia. He is being treated by a psychiatrist in London who introduces him to a man who says he knows Peter. Not recognizing him, Peter tries to find out more when the man pulls a gun on him and is shot through the window of Peter's apartment before he can shoot Peter. Forced to get rid of the body, Peter is disturbed by a telegram delivered to his door supposedly from his forgotten wife, Sara, in Italy. Peter travels to meet her and to regain his memory but fails to recognize her at the train station and is guided back to her by a man who has been following him...