Susan Powell, 38
The 38-year-old mother has been missing from her West Valley City, Utah, home since Dec. 7, 2009, the day after her husband, Josh Powell, loaded up the couple's two young sons for a late-night camping trip.
Josh Powell, the sole person of interest in his wife's disappearance, killed himself and his two sons, Charles, 7, and Braden, 5, in a fiery explosion on Feb. 5, 2012.
Josh Powell repeatedly said he wanted his wife to come home and didn't know what happened to her, but prosecutors continued to allege he was involved in Susan Powell's disappearance.
If you have any information about Susan Powell, contact West Valley City Police at (801) 840-4000.