In the aftermath of Sofia Richie's Keeping Up With The Kardashians debut, Kourtney Kardashian is dealing with something much more serious.

Someone has been robbing her blind. We're talking about someone physically in her house, stealing cash and an iPad.

In this preview clip, you can see her concerns as she wonders which person has betrayed her trust.

This Keeping Up With The Kardashians sneak peek starts off almost unimaginably boring.

Khloe is talking about wanting to retire her cookie jars, lamenting that "everyone has them now."

(Refusing to do something because it's popular is not morally superior to doing something because it is not. Both are dumb)

That's when Megan, Kourtney's dutiful assistant, saves the day and the scene when she reports some bad news.

Some of Kourtney's money -- specifically, her cash -- is missing.

"Kourt?" Megan begins tentatively.

She reveals: "So, we discovered that there was cash missing from your wallet."

While that's better than money being siphoned from one of Kourtney's massive bank accounts, that's still very alarming.

“So," Megan continues. "I don’t know if you spent it out the other night?"

That suggested answer would be so much simpler. Money spent is much less scary than money stolen.

"Umm, I specifically handed $20 to the valet," Kourtney recalls.

She continues: "And I had hundreds, and I threw them back into my bag,”

Megan then delivers the very bad news.

“There’s no hundreds there right now,” she grimly announces.

“Is there any chance you could’ve lost the money?" Khloe asks, hoping for the simpler explanation.

She suggests to her eldest sister: "Like, do you think it fell, or…"

"It was definitely there," Kourtney confirms.

There's a brief transition, and Kourtney says: "You know when you just know? Like, I know for a fact."

"That’s crazy!" Khloe exclaims. "I don’t know."

Kourtney then speaks on this very serious matter to the konfessional kamera.

"The fact that money is missing from my wallet definitely doesn’t feel like a coincidence," she admits.

Because she suspects that this thief has also made off with more than just currency.

Kourt recalls: "We had an iPad missing in the house too,”

We then see a flashback to her looking for her iPad and being unable to find it.

“You know, I have people in and out of my house all day," Kourtney points out.

Some are family, some are friends, some are employees, and others are camera crew and producers for Keeping Up With The Kardashians.

Kourt says that these are all "People that I trust."

"Something just isn’t right," she expresses.

A thief nabbing physical cash may not be able to rob her of as much as someone getting into her accounts would.

But the actual, physical presence of a thief in Kourtney's own home would make anyone understandably nervous.

So who is it? Well, this sneak peek does not reveal the culprit's identity.

Honestly? Even with what most people would consider a very nice salary, it's possible that a PA or other employee was desperate enough to steal.

But in a normal household, a young child would usually be the most likely suspect.

Not because Kourtney's wonderful children are prone to crime, but because young kids recognize the value of money, but generally lack impulse-control.

And an iPad going missing is even easier to explain if a child wants to stream shows after bedtime. But we're obviously not accusing her kids.

But given that this is Keeping Up With The Kardashians and they've chosen to air the footage, the answer may be something no one expects.