Jason McDermott

Jason McDermott's car on the way to Morgan's house in the minutes before her death.

A week after Morgan Fox's murder, the sheriff's office arrested Jason McDermott for committing it.

And I remember feeling just so much relief.

Like, there's no good to this.

Nothing's going to make it better.

But knowing that he can't hurt Emmy was a huge relief for me.

That relief would soon be mixed with another emotion, anger.

Because in the days after the arrest, Morgan's sister found something.

This girl knows something.

That girl is Sienna Clements.

The story she told would reveal that Morgan Fox was not the first woman at FedEx to attract way too much of Jason McDermott's attention.

Sienna was 19 when she started working at the FedEx warehouse and met Jason.

Around that time, Sienna was caught driving while impaired.

She had to attend court-mandated counseling sessions, and her license was suspended.

She says Jason stepped in.

And he started giving you rides to work.

So this was like an inconvenience for him.

But he was still doing it.

Eventually, Sienna started getting rides from one of her neighbors.

How'd Jason react to that?