Elizabeth Vargas

Even though this is long before the days of Waze... We're all set.

Even though this is long before the days of Waze... We're all set.

Investigators know from UVA's Charlottesville campus to Washington, D.C., the round trip is only 240 miles. 240 miles, and you had 669 miles.

Investigators know from UVA's Charlottesville campus to Washington, D.C., the round trip is only 240 miles. 240 miles, and you had 669 miles.

It's quite a coincidence. So police question Elizabeth again.

It's quite a coincidence. So police question Elizabeth again.

That ring true to you?

That ring true to you?

Elizabeth is cooperating with police and agrees to give her fingerprints and blood. But it's a path of bloody footprints in the Hasem's front yard that has gotten investigators' attention. The prints were revealed by luminol, a chemical that tests for the presence of blood.

Elizabeth is cooperating with police and agrees to give her fingerprints and blood. But it's a path of bloody footprints in the Hasem's front yard that has gotten investigators' attention. The prints were revealed by luminol, a chemical that tests for the presence of blood.

Just stop.

Just stop.

So clearly they got into something. But when investigator Reed examines Jens and Elizabeth's rental car, he comes up empty. When you sprayed the luminol inside the inside of Elizabeth and Jens' rental car. I got no reaction. Remember, it's 1985 and DNA testing is not yet in use in criminal courts.

So clearly they got into something. But when investigator Reed examines Jens and Elizabeth's rental car, he comes up empty. When you sprayed the luminol inside the inside of Elizabeth and Jens' rental car. I got no reaction. Remember, it's 1985 and DNA testing is not yet in use in criminal courts.

So without a hit on the car, investigators are looking for a match to the type O blood found at the crime scene. It wasn't the victim, so they assume it must be the killer's.

So without a hit on the car, investigators are looking for a match to the type O blood found at the crime scene. It wasn't the victim, so they assume it must be the killer's.

Investigators are flummoxed again because Elizabeth has type B blood. Her fingerprints did show up on a vodka bottle at her parents' home, but that's not surprising. She visited often. But then someone from Elizabeth's own family points a finger of suspicion at her.

Investigators are flummoxed again because Elizabeth has type B blood. Her fingerprints did show up on a vodka bottle at her parents' home, but that's not surprising. She visited often. But then someone from Elizabeth's own family points a finger of suspicion at her.

That's a pretty unbelievable, pretty shocking thing to say. Exactly. But it just happened to come at the time when you had nothing in this case except for this strange rental car agreement.

That's a pretty unbelievable, pretty shocking thing to say. Exactly. But it just happened to come at the time when you had nothing in this case except for this strange rental car agreement.