TUCSON, Ariz. -- There is a startling revelation in the case of a missing Tucson girl that's gone all but cold.
Isabel Celis disappeared in April 2012.
Now, as Isabel's eighth birthday approaches, her parents say there is someone who they believe could help bring her home.
Isabel's father said a family member, whom he won't name, has refused to talk to the couple's private investigator.
"It's frustrating to run against a wall of this person has an attorney and they're not going to let them speak a word, protecting somebody that we feel has a lot of information to give," Sergio Celis said.
Sergio does not believe that person committed a crime but does have information of some kind.
"And if it has to be anonymous, so be it. We just want her home. We want our baby home. We want this nightmare over," said Becky Celis, Isabel's mother.