In 1971, two South Dakota teens drove through the country towards a party in a gravel pit.
They never arrived and were never seen alive again.
There was no sign of the girls or their car.
It is almost like they vanished into thin air.
It became one of South Dakota’s biggest cold cases.
Over 40 years later, a creek revealed a secret it had been keeping for decades.
What happened to Pamela Miller and Cheryl Jackson?