You have access. You looked up something on your phone or the computer. You got some medication. Say, "Here, dad. Here's some food. You need to go to sleep for a while, which I need a break." Cuz that's what happened on the 7th when he slept for 15 hours after you gave him some food and he freaked out about it. >> This chilling saga began with a simple welfare check on a missing father. His daughter, Dana, answered the door, claiming her father was away in the mountains with a new girlfriend. Um, we're not as like close as you'd think we were living together, but um, he just kind of comes by in between. >> But her story was filled with holes from the very beginning. An officer noticed a putrid, overpowering stench inside the home. Dana immediately blamed it on a backed up toilet in the basement. >> Being asked, Dana tells him she had a toilet back up in the basement. >> Does he have a room here? >> Not really. >> No. >> No. >> Okay. >> Suspicion exploded when Dana's own brother came forward with damning text messages. their father had texted him believing Dana was poisoning his food. This terrifying information led police straight back to the house with a search warrant. >> The police found a small hidden room in the basement behind a fake wall. The floor appeared to have freshly poured concrete over it as if someone had hidden >> beneath the freshly poured concrete. They made a gruesome discovery unearthing a human body. In the interrogation room, Dana's carefully constructed web of lies began to completely unravel. >> I know they haven't been totally truthful with Detective Payne here because I know by body language and by statement analysis that you don't want to give us the entire truth. >> She was then cornered about cashing her dead father's checks. >> And he wrote you a check for $500. >> I wrote in the $500. >> You wrote the $500? >> Yeah. To get some stuff from the basement. >> With the body found, there was no escape from the inevitable. >> We found a body in your house. >> At this time, you're under arrest for concealing a dead body. >> The autopsy confirmed the most monstrous possibility. William died from a massive drug overdose. A drug investigators discovered Dana had ordered online. For her cold and calculated crime, she was sentenced to spend the rest of her life in prison.