Rynox (1931)

Wealthy businessman F.X. Benedik, Head of the Rynox company, claims to have been receiving threats from a mysterious stranger named Boswell Marsh. Benedik is subsequently found murdered and the hunt is on for the elusive Marsh. Benedik's son Tony takes over the running of the business and tries to find some lead on Marsh, and why he should have borne a murderous grudge against Benedik Senior. His investigations lead him to the unexpected finding that Marsh never existed.