Jennifer vanished sometime in the overnight hours.

Right now there is no trace.

The investigators say evidence leave them to believe that she's dead.

Stick my nose back in that trail. That's all I can do.

This is already gone.

Already gone.

Already gone.

Before we delve into this case, a friendly reminder

that we're talking about some grim topics

that involve the murder of a child.

So listener discretion is advised.

When you were a kid, did you love a good sleepover?

Watching movies, staying up late, listening to music,

eating junk food until you crashed?

Only settling in for bad at the request of the parents who were hosting?

I loved going to sleepovers.

My friend Tammy, she had the best ones

because her house had a pool and a pinball machine

and a Coleco gaming setup.

It was the most fun place for 12-year-old me to be.

Diana Seifert also loved to spend time with friends

and when she met a new friend, Lindsay McCracken,

...