Kevin leaked information about the murder case to the local paper in hopes that Paul would reopen the investigation.  Paul figured out it was Kevin and arrested him.  It seemed that a response from the killer appeared online, but Mariah admitted to Kevin that she'd posted the fake reply in order to get Kevin out of prison.

Kevin:

Mariah:

Kevin:

Mariah:

Hey, ___ ____ __ ____ ____.

___ __ _ ________ __ ____ ____? _ _____ _____ ____ ________ _____ through the door. ____

__ they come after me, Kevin? I'm going to __ ________ ___ _______ ____ _____ _______

__________ ____ the killer of Austin and Courtney.

And Tobias.

And if ___ ____ _____ ____ _____ __, ___ ______ ____.

Mariah:

Kevin:

Mariah:

Hey, you need to calm down.

How am I supposed to calm down? I panic every time somebody walks through the door. What if they come after me, Kevin? I'm going to be arrested for posting that bogus message supposedly from the killer of Austin and Courtney.

And Tobias.

And if the cops don't come after me, the killer will.