Masterpiece: Sherlock: The Hounds of Baskerville

Sherlock and Watson pursue the trail of the Baskerville experiments, top-secret government research on genetically engineered gigantic animals for military use. Or so it is rumored. Whatever the truth, something big is up on the moors. Benedict Cumberbatch is the world's foremost consulting detective, with Martin Freeman as the stalwart Dr. John Watson.

PBS | May 13, 2012

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