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.
|Robert Hewitt Wolfe||Writer|
|Audrey Lynn Weston||Guest Star|
|Jacob Pitts||Guest Star|
|Ophelia Lovibond||Guest Star|
|Phil Simms||Guest Star|
|Raza Jaffrey||Guest Star|
|Rich Sommer||Guest Star|
TheTVDB is an open database, meaning that if information or images are missing, you're welcome to log in and add the information yourself.