Suspense S05 E09 All Hallow's Eve

In 1880s London, Mr. Markheim stabs to death a pawnbroker whose wealth he has long envied. Markheim says he intends take some of the businessman's riches, marry, and become a saintly man. An otherworldly visitor who knows Markheim intimately informs him that he will never change his evil ways and therefore should kill again.