So, he thinks its best to just keep pursuing the new head of the organization in private.
Things change though when a bomb goes off at Morlands workplace, killing some of Morlands employees.
Unfortunately, theres no security footage to give them a lead on who it might be.

Credit: Michael Parmelee/CBS
While everyone thinks Morland is away on business, Sherlock knows better.
He thinks hes back to send a message.
The question then becomes, who hired him?
The funny thing is, Sherlock and Joan dont even have to question him very hard.
When they show up at the University where he teaches, he basically admits to running the whole thing.
What took you so long?
he says upon their arrival.
They track a gift card number, then guess that Kraznov must be holed up in the area.
The NYPD finds him in a shady motel and bring him in for questioning.
Kraznov is not exactly cooperative though.
First he plays dumb about speaking English, then he just refuses to acknowledge anything.
Of course, Sherlock has another motive here.
As they say, once a torturer, always a torturer.
Vikner asks to meet Sherlock at the funeral of Morlands employee who died in the bombing.
It turns out that he wants Sherlock to mediate a peace agreement between Vikner and Morland.
Sherlocks going to need more than that if hes going to step in and mediate for these two.
Its an intense scene that doesnt make a whole lot of sense until Sherlock puts it together.
Thats three of the six psychopaths discovered at this point, so theres probably more destruction to come.