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.
Elenco:
Jonny Lee Miller
,
Lucy Liu
,
Jon Michael Hill
,
Aidan Quinn
,
John Noble
,
Natalie Dormer
,
Ophelia Lovibond
,
Rhys Ifans
,
Sean Pertwee
.
