|The Invisible Hand|
|Directed by||Guy Ferland|
|Written by||Robert Doherty|
|Air date||May 1, 2016|
|Previous||"Turn It Upside Down"|
|Next||"A Difference in Kind"|
The Invisible Hand is the 23rd episode of season four. The episode was directed by Guy Ferland. It premiered on May 1, 2016.
There is an explosion at Morland’s New York office. The bomber, whose explosive of choice consisted of four large water jugs filled with an acetone mixture and a detonator, deliberately waits until Morland has left the building to set the charge and press the go-button.
The organisation behind all the recent troubles for Morland Holmes turns out to be the group created by Jamie Moriarty. Command of the group, which was falling into chaos, was taken over by her former lover and father of her child Joshua Vikner.
An assassin Krasnov is arrested, but before the police are able to pry more information out of him and link him to Vikner, one of the department’s own officers, Panabaker, shoots Krasnov in the head before killing himself.
Later as Holmes and Watson return home, Sherlock notices a light on at the neighbor’s house — a neighbor who happens to be out of town. After slipping in through a different entrance out of precaution, Sherlock and Joan see that an explosive device has been wired up inside the brownstone.
The episode ends on a cliffhanger and the story is continued in the season finale A Difference in Kind.