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Mark Gatiss Based Mycroft Holmes on Someone Real — And Benedict Cumberbatch Figured Out Who It Was.
2026/06/17 Report

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Mark Gatiss Based Mycroft Holmes on Someone Real — And Benedict Cumberbatch Figured Out Who It Was.

Mark Gatiss, who co-created Sherlock and plays Mycroft Holmes on screen, has never fully named the real person who shaped his performance. He has said the character draws on several sources, that it would be indiscreet to be specific, and then stopped talking about it.


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Benedict Cumberbatch, in a 2012 interview, let something slip.

He mentioned, while discussing the dynamic between Sherlock and Mycroft, that working opposite Gatiss felt like working opposite someone who had spent time in rooms where actual power lives — not performed power, but institutional power, the kind that doesn't need to announce itself.

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