Sherlock helps a math genius from his network of 'Irregulars' experts after he stumbles upon a body while participating in a math puzzle competition. Joan attempts to extend an olive branch after she learns about Kitty’s past.
| Creator | Robert Doherty |
|---|---|
| Actor | Jonny Lee Miller, Lucy Liu, Jon Michael Hill |
| Country | United States of America |
| Production | Timberman/Beverly Productions |