 He succeeds in freeing himself, but he finds in a desk drawer a luminous watch identical with that worn by Mac's murderer.He angrily leaves the apartment supposing Philip guilty of Mac's murder, and he continues to suspect Philip until he finds that Detective Grupe, who stops and picks him up on the street, is wearing one of the suspicious watches as well.Thinking Grupe to be the murderer, Oliver escapes from his car and returns to Philip's apartment.