On December 9th, 2009, Susan Cox Powell disappeared from West Valley never to be seen again. Less than a week later, her husband Josh Powell was named a person of interest in her disappearance, but never charged.

Josh lost custody of their two boys to Susan's parents. But during a supervised visit, he committed murder-suicide, killing the young boys and then blowing himself up. Many see this as an admission of guilt.

But so many questions remain. Why did Josh's brother kill himself sever months after Josh? Are there still leads in the case? And most importantly: where is Susan's body?

We are talking to Private Investigator Rose Winquist who was hired by the Cox family's attorney to look deeper into the case.