Robert Walford

But none of those leads led to any new evidence.

In 2012, nine years after Amanda's disappearance, Ohio inmate Robert Walford, who was incarcerated since 2007 for killing a homeless man, wrote to the Cuyahoga County Prosecutor's Office.

He confessed to Amanda's murder, and he offered to show them where she was buried.

He passed a polygraph test, so police spent two days and $150,000 digging up a vacant lot in Cleveland, bringing Robert from prison twice to pinpoint the location.