

Benedict Cumberbatch and the Sign of Four (or is it Three?)
Clip: Season 3 Episode 2 | 2m 22s
Sherlock star Benedict Cumberbatch faces a brain-bending challenge from Murray-arty.
Sherlock star Benedict Cumberbatch gets some help from his friend Count Von Count to solve a brain-bending challenge from Murray-arty.
Problems with Closed Captions? Closed Captioning Feedback
Problems with Closed Captions? Closed Captioning Feedback
Funding for MASTERPIECE is provided by Viking and Raymond James with additional support from public television viewers and contributors to The MASTERPIECE Trust, created to help ensure the series’ future.

Benedict Cumberbatch and the Sign of Four (or is it Three?)
Clip: Season 3 Episode 2 | 2m 22s
Sherlock star Benedict Cumberbatch gets some help from his friend Count Von Count to solve a brain-bending challenge from Murray-arty.
Problems with Closed Captions? Closed Captioning Feedback
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Funding for MASTERPIECE is provided by Viking and Raymond James with additional support from public television viewers and contributors to The MASTERPIECE Trust, created to help ensure the series’ future.