Cheryl says she believes that a global terror network is experimenting on her with lethal chemicals, Saudi Arabia is funding a U.S. terror attack, and she will be killed by lethal poisoning. Cheryl claims the poisoning in her home is so bad that she has to wear two surgical masks just to stay alive. Cheryl says she is fighting to survive and getting weaker, and she doesn't know how much more time she has left. Cheryl's daughter, Bryna, says her mother is living in an altered reality and is concerned for her mental health. Dr. Phil examines Cheryl's claims to see if they stand up to challenge. Plus, Dr. Phil reveals the results of extensive testing in Cheryl's home — what do they reveal?