|Just a Regular Irregular|
|Directed by||Jerry Levine|
|Written by||Robert Hewitt Wolfe|
|Air date||November 13, 2014|
|Previous||"The Five Orange Pipz"|
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.