Hearing that her kidnapper suffered from mental illness was too much for Elizabeth Smart during testimony in the trial of Brian David Mitchell, the self-described "prophet" who kidnapped Smart. As a doctor described Mitchell's delusions of fathering a new race of children with Smart to populate an imaginary "Zion," Smart became visibly angry and stormed from the courtroom to a private area outside. She returned with her mother about 30 minutes later. The 23-year-old Smart was likely angry to hear an expert bolstering Mitchell's case for acquittal; the federal prosecution team, along with several of the doctors who have examined Mitchell, believe he is a deceptive psychopath able to fake mental illness convincingly. If convicted, the 57-year-old could face life in prison.