Morgan Weed

Holmes moves in on Moriarty as Sebastian Moran returns to warn Sherlock about his enemy's latest antics.

As Detective Carter deals with the fallout from her recent encounter with Reese and Finch, the Machine ups the ante for the duo by giving them four Social Security numbers instead of one.

A woman suffering with anorexia is treated, while Dr Reese returns and is immediately put to the test.