In 1991, a high school girl vanished after attending a party.

Her abandoned vehicle was found in a school parking lot near her home.

The prime suspect had not won, but two alibi witnesses for the night she disappeared.

A solid alibi can often overcome much circumstantial evidence.

But forensic evidence is another matter.

On a Saturday night in November of 1991, 17-year-old Crystal Fade Todd was dropped off in a

mall parking lot after attending a party.

Since Crystal didn't have to be home for another hour, she said she was going to get something to eat before heading home.

It was the last time Crystal was seen alive.

When she wasn't home by 1am, her mother contacted police.

She also called Crystal's best friend, Ken Register, who said he hadn't seen Crystal all night.

After I talked to Ken Raster, I called him one of my friends and he got up out of bed and came in and we went all over Conway Hunter.

See if we could find her car anywhere.

They found her car the next morning in a nearby school parking lot. Her person coat were inside.

I don't know why I had to feed it. It just something coming over me that somebody had Crystal.

17-year-old Crystal Fade Todd was a senior in high school living in the small tobacco farming town of Conway, South Carolina.

I was 39 and she was born. She was a miracle to me. And I just couldn't leave a hat or I was proud I was proud ever too.

Crystal's dad died when she was very young. But she grew up as a happy child, active in her church, sung in the youth group choir and dreamt of going to college.

She was very lively, good personality, good humor, very outgoing. Just loved to be with her friends, hanging out and having a good time.

Just a few hours after Crystal's abandoned car was found in a school parking lot, two hunters in a remote field noticed a trail of blood.

It led to a nearby ditch, Verly a woman's body with multiple stab wounds and partially disrobed.

It was brutal and it was a... it's a scene that will be with me for a long time.

...