Neilson is a fictional character portrayed by Todd Boyce in the TV series Sherlock.
In the first episode they appeared in, titled A Scandal in Belgravia (season 2), they were 50 years old.
They appear in 1 episodes out of a total of 12 aired
Episodes1
A Scandal in Belgravia
episode S2.E1 may 2012Sherlock must confiscate something of importance from a mysterious woman named Irene Adler.