An Englishman in Paris to purchase engagement presents for his fiancee is arrested for the murder of a count in 1881. Circumstantial evidence - a scarf pin and a rare book - point to his guilt. But interviews with the magistrate and verifying of his evidence have him set free, but not proven innocent. He is ostracised by many including his fiancee, but he becomes widely popular. A chance encounter in Berlin reveals the identity of the true murderer. (PB)