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Cassie Marshall

Producer at Dateline NBC and guest on the Dateline: True Crime Weekly podcast, where she discusses true crime trials and investigations.

Oct 22, 2026

5:24
Cassie, as the agent walked the jury through these messages, they were presented in a really unique kind of way, almost like a play.
5:31
Yeah, so the FBI special agent would read Sandra's text messages, and then the prosecutor would read Farwell's responses.
5:41
So it was that back and forth reading that sort of brought the text messages to life.
5:46
And they weren't overly theatrical at all, but they did give you sort of like more of a feeling of it.
5:50
And there were a lot of them, and they were very, very detailed.
5:54
A lot of them were quite disturbing, frankly.
5:56
Some of them had to do with violence, violent rape fantasies or sexual fantasies.
10:25
What about Farwell's phone? Did investigators examine
5:32
Yeah,
5:33
so the FBI special agent would read Sandra's text messages, and then the prosecutor would read Farwell's responses.
5:42
So it was that back and forth reading that sort of brought the text messages to life.
5:47
And they weren't overly theatrical at all, but they did give you sort of like more of a feeling of it.
5:52
And there were a lot of them, and they were very, very detailed.
5:55
A lot of them were quite disturbing, frankly.
5:58
Some of them had to do with violence.
10:27
What about Farwell's phone? Did investigators examine that?
5:38
Yeah, and the prosecutor put up a photo of Sandra and some other cadets from this Explorers program.
5:46
Yes, I think there was maybe tid kids in the photo.
5:48
And she's by far the smallest and super innocent looking.
5:52
And they say that's where she met Matthew Farwell.
5:55
And he started by sending her a Facebook friend request.
5:59
which, you know, is outside the purview of the program.
6:02
Then he started tutoring her at the library outside of the program.
7:37
The defense, Cassie, wants the jury to believe that Sandra was suicidal.

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