Sherlock helps a math genius from his network of "Irregulars" experts after he stumbles upon a body while participating in a math puzzle competition. Meanwhile, Joan attempts to extend an olive branch after she learns about Kitty's past.
Episode rating
Cast of episode
81
18
1
- Sherlock Holmes
- Dr. Joan Watson
- Detective Marcus Bell
- Captain Thomas Gregson
- Harlan Emple
- Kitty Winter
- Paul Ladesma
- Andrew Paek
- Beka
- Woman (At Support Group)
- Byron Lowenthal
- Ike Wallaczek
- AA Group Member
- Phil Simms