Sherlock Holmes' problem with disturbing dreams proves to be both an impediment and an aid in the search for a missing woman.
Sir Charles Baskerville dies on the moor under mysterious circumstances and rumors abound about a demonic hound. When the American heir arrives to take charge, a family friend calls in Holmes and Watson to get to the heart of the mystery.
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.
Sherlock Holmes investigates strange and tragic happenings in a village that appear linked to a man who seems to be like a vampire.