A California teen is strangled and buried alive. Inside her family's fight to keep her killers in prison.

It was Sept. 18, 2003 when Justine Vanderschoot's remains were discovered in a remote location more than two weeks after she disappeared. But it's in the garden outside her bedroom window where her parents Don and Lynnette still come to find her.

Lynnette Vanderschoot: It's … 21 years since we've lost Justine … but it's still very fresh in our mind.

Mementos of their youngest child and condolence flowers that poured in after her death are now permanently rooted here.