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A strange clue in an empty room, a blood-soaked car, a priceless Old Master, a deranged bomber. With the clock ticking, the curtain rises on a battle of wits between Sherlock, John and the shadowy stranger who seems to know all the answers...
First Air Date : Jul 25, 2010
Last Air date : Jan 15, 2017
Episode : 12 Episode
Season : 4 Season
Runtime: 90:14 minutes
Studio: BBC One
Country: United Kingdom, United States of America
