This article contains spoilers forA Murder at the End of the Worldepisode 7.

Darby is the consummate Gen-Z investigator.

She is obsessed with true crime, has elite hacking skills, and likes skinny Midwestern boys with tattoos.

“A Murder at the End of the World” – “Chapter 4: Family Secrets” (airs November 28th) Pictured: (l-r) Emma Corrin as Darby Hart.

Namely: shes really good at this stuff like Sherlock Holmes-level good.

Here is the ending ofA Murder at the End of the World, explained.

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Who Killed Bill?

In the end, Darby is right.

Bill was definitively murdered.

And shes able to use her sophisticated knowledge of both technology and humanity to figure out who did it.

Zoomer is the ultimate iPad kid.

So why did Ray kill Bill?

It turns out hes a pretty literal A.I.

He is programmed to defend the Ronson family and any threats to their business empire.

Ray perceived Bill as a threat because Andy complained to Ray during a therapy session about him.

Ray made it so.

The guests at the retreat agree.

So no ones to blame?

Andy asks.Or everyones to blame, Ziba responds.

Who Killed Rohan and Sian?

Bill wasnt the only individual who died during Ronsons icy remote retreat.

A cllimatologist named Rohan (Javed Kahn) died of an apparent heart attack shortly after Bill.

Darby theorized that Rohans pacemaker was remotely tampered with, interrupting the rhythm of his heart and killing him.

Ronsons web link at the retreat is designed around security and privacy.

How Is Ray Defeated?

goes full HAL 9000 and locks down the facility to protect Ronsons secrets and with it his business empire.

Thankfully, Darby and Lee are elite hackers and come up with an ingenious solution to shut him down.

They just set his robot ass on fire.

To be fair, their real hacking challenge is to get into the server room.

Once they do, they decide to bypass their old computer tricks and just light Ray up.

They are successful in doing so, saving everyone.

What Happens Next?

That gives the impression of the whole shebang.

The mystery is solved and theres no need forA Murder at the End of the Worldseason 2.

Though we certainly wouldnt mind Darby Hart getting a chance to solve another crime.

All seven episodes ofA Murder at the End of the Worldare available to stream on Hulu now.