"Mrs Hudson's been attacked by an American. I'm restoring balance to the universe."
Sherlock Holmes [src]

Neilson is a CIA field operative who interrogated Mrs Hudson. He was repeatedly thrown out a window by Sherlock Holmes in retaliation. He later meets Sherlock again and when the consulting detective asks how he is feeling, Neilson replies, "Like putting a bullet in your brain, Sir." and casually comments how he would get a medal if he did. [1]


  1. Moffat, Steven (writer) & McGuigan, Paul (director). (1 January, 2012). "A Scandal in Belgravia". Sherlock (2010). Series 2. Episode 1. BBC One.
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