For years, a blackmailer has been preying on the weaknesses of others throughout London. When Holmes hears of the utter misery this mystery man is creating, he adopts a campaign to thwart his evil scheming. The campaign astonishes Dr. Watson by its strangeness and finds Holmes falling in love.

Thriller, Drama, Crime, Mystery, TV Movie

Jeremy Brett, Edward Hardwicke, Robert Hardy, Norma West, Gwen Ffrangcon Davies, Colin Jeavons