Thankfully, hes not dead or anything.

So perceptive, that Sherlock.

So no, Clyde isnt dead, but there are a number of human bodies piling up this week.

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Credit: Michael Parmelee/CBS

As the killers flee, something happens to their car.

The question is who would have wanted him dead.

Those questions lead Sherlock to bring in Mason, his handy tech guru.

He finds a signature buried in the code that connects to a hacker nicknamed Mittens.

By day, shes Fiona, a coder for tech company Pentillion.

Thats because shes autistic, and it makes it nearly impossible for her to lie.

She cant even tell Sherlock that the sky is green when he asks her to.

But with Fiona cleared, who had access to her software?

For Phils money, though, he thinks the CEO of rival tech company Tetrabit could be the culprit.

So who would have benefited from his death, they ask.

Just like Carol, he insists he was actually going to benefit from the deal.

NEXT: Dinners getting cold

Meanwhile, Morland Holmes has invited Joan out to dinner.

As is the case with Morland, theres usually more to the story, though.

Its just up to Joan to figure out what that is.

Based on the tip from Harry, Sherlock and Marcus visit the strip club where Maxim was shot.

Hes seen her files in London; shes a Russian spy.

Just like everyone else, she says she had nothing to do with Maxims murder.

Also, she identifies the drive-by assassins as ex-Ukrainian military.

Still, the case bothers Sherlock.

Would the Ukrainian government really want Maxim dead?

So who stood to benefit from the Russian-Ukrainian war continuing?

And guess who else is building rocket engines?

Thus, Sherlock enlists Fiona for a little sleuthing.

He gets her to hack her boss car, driving Phil straight to Sherlock.

Phil just handed them a nice, tidy confession.

While that case is solved, Joan stumbles upon another one.

That leads Sherlock to the obvious question: Does Joan believe that his father had this woman killed?