Dr. Phil continues his conversation with Chris Vaughn's parents, Gail and Pierre, who say they believe their son is innocent of committing the murders of their three grandchildren and daughter-in-law. Chris recently spoke out about the horrific morning of June 14, 2007, for the first time, when he sent Gail and Pierre a letter giving his explanation on what happened. For the past 14 years, private investigator Bill Clutter has been investigating the case and claims, with the help of Chris' letter, he now has the answers in hopes of getting Chris out of prison. Bill shows what he believes happened inside that SUV. If Chris didn't commit these murders, then who did and how? Also, hear from Chris Regis, the former Assistant State's attorney who fought hard to put Chris behind bars. He says Chris Vaughn is right where he should be.