Joe Hunter

His name is Andrew Alvarado.

Back then, he told authorities he had played basketball with Pastor Mark Lewis for about six hours.

Detectives decided to re-interview him and recorded the call.

Was anyone else playing basketball with you?

Yeah, a couple other teenagers.

This time, investigators learned a new detail.

He had actually left the church grounds during those six hours to drive the teenagers home, he says, and wasn't sure what the pastor was doing while he was gone.

We repeatedly reached out to Alvarado, but never heard back.

So there were gaps of time when he was not with Mark Lewis.

Mark Lewis was not questioned during the reinvestigation.

The sheriff's office had another forensic pathologist look at Joanna's case.

Dr. Scott Luzzi agreed with the original coroner.

Suicide.

The case was closed again.

And then in 2015, the County District Attorney's Office announced its own investigation, which included DNA testing on Joanna's bathrobe sash.

The results?

Her DNA was found on the sash, along with an unknown male, not Mark Lewis.

Was anything done to investigate that further?

Could it have been anybody else associated with Mark Lewis?

CODIS is the FBI's criminal DNA database.