@abcnews: Corie Walsh has pleaded not guilty to first-degree murder charges in the death of her 2-year-old son. Authorities say the toddler was found dead in the basement of the family's suburban Chicago home earlier this month. According to police, Walsh was found upstairs and allegedly told officers she had killed the toddler because he was the "devil" and the "Antichrist." Her attorneys say she was in a state of psychosis at the time of the killing.