DID A DAUGHTER HAVE A HAND IN HER PARENTS' MURDER, OR DID A MORTGAGE APPLICATION LEAD TO THEIR DEATHS?

"48 HOURS: A DAUGHTER, A MORTGAGE AND TWO MURDERS"

August 15, 2015 at 10:00 PM, ET/PT

Erin Moriarty and 48 HOURS report on the mystery behind the murder of an Albuquerque, New Mexico, couple and the two surprising suspects in an encore of "A Daughter, a Mortgage and Two Murders" to be broadcast Saturday, August 15 (10:00 PM, ET/PT) on the CBS Television Network.

Bernadette and Greg Ohlemacher were shot dead in their home on August 2, 2005. Their daughter, Renee, then 20, was home at the time - she hid in a closet after she heard the gunshots and phoned for help.

"I heard my mom scream and my dad yelled, 'What are you doing!'" Renee told 48 HOURS. "Gunshots just went off. Boom, boom, boom, boom. Honestly, I didn't know what to do."

As the only survivor, police immediately suspected Renee was involved. Investigators questioned why she called the police department's general number first rather than 911, delaying the response somewhat. Police investigated Renee, and found no evidence tying her - or anyone else - to the murders. Renee did have motive - she inherited more than half a million dollars from her parents' estate.

Progress on the case slowed until 2006, when a mortgage loan processor - Ron Santiago, who worked for Countrywide Home Loans - turned himself in to the Secret Service in relation to a crime that had nothing to do with the Ohlemacher murders. The Secret Service learned that there was an unsolved murder regarding a couple that had worked with Santiago on a mortgage. Police searched Santiago's home and, in his garage, found a single shell casing that matched those casings found at the Ohlemacher crime scene. That single casing would change his life forever. But would it be enough to put him behind bars for life?

Just before Santiago's trial began, Renee learned the prosecution wasn't finished investigating her possible involvement in the murders. In 2012, the District Attorneys' office had Renee take a polygraph, which was inconclusive - she didn't pass and she didn't fail. Those results would haunt prosecutors at Santiago's trial.

"I knew these people, I'd worked with them in the past and I was working with them then," Santiago told 48 HOURS. "But I had nothing to do with the murder."

48 HOURS: "A Daughter, a Mortgage and Two Murders" is produced by Paul LaRosa and Allen Alter. Leslie Neigher is the associate producer. Bruce Spiegel, Atticus Brady and Richard Barber are the editors. Suzanne Allen is the senior coordinating producer. Linda Martin is the update producer. Peter Schweitzer is the senior producer. Susan Zirinsky is the senior executive producer.

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