In just one month, Steven Powell is scheduled to walk out of the Washington State Prison, a free man.

The father-in-law of missing West Valley City woman, Susan Cox Powell, was convicted last year on voyeurism charges, after a search of his home uncovered photographs of naked neighborhood girls.

Susan Powell has been missing since December 2009...and her sister-in-law -- Steven Powell's daughter -- continues to believe her father had something to do with the disappearance.