nursing home patient mary cole turns up missing during a bed check. finding her becomes a manhunt. noted on her missing person poster, she suffers from alzheimer's disease and maybe disoriented. her daughter, tammy terry, clings to hope and joins the search. >> from morning until pitch dark. >> four days go by until mary is finally found inside the nursing home, locked in a storage closet. >> i believed and trusted them when they said we searched every room, every nook and cranny, we moved furniture, and it was a lie. >> mary is severely dehydrated and dies soon after. the family's lawyer says mary wandered into that closet and got trapped. >> my mom suffered for four days. and there's no excuse for it. >> 1 in 5 nursing home patients