Most homeowners would prefer grass to a lawn full of weeds, but the forensic scientist

weeds can tell a story.

With the help of a plant biologist and a new high-tech computer program, investigators

solved the mystery of a young girl's murder.

Weekends were typically busy in the Mauser household.

One Saturday morning in 1995, as Kathy Mauser was leaving for work, she reminded her 14-year-old

daughter Jenna that she was grounded for the weekend and wasn't allowed to use the telephone

either.

Jenna was having some behavioral issues.

A lot of 14-year-olds, 15-year-olds, might have those kinds of issues when they're growing

up, lots of pressure or social pressures, problems within the family.

She was having such trouble that the family was taking her to counseling.

Kathy returned home from work around 1pm, and as soon as she tried to open the door, she

knew something was wrong.

Mrs. Mauser found the front door locked, which she said was unusual, because usually there's

somebody there.

And she was expecting Jenna to be there so the front door would have been unlocked.

Jenna wasn't home, and she hadn't left the note saying where she went.

They just figured she was upset and she would basically just walk away, you know, or she

would just, with one of her friends, or, yeah.

One of the neighbors saw Jenna leave or noticed anything suspicious.

When Jenna's stepfather and brother arrived home several hours later, they searched the

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