Overview: Scott Pelley interviews Secretary of State John Kerry, who is dealing with multiple challenges including chemical weapons in Syria, foreign terrorism and a potentially a new relationship with the new president of Iran. . Steve Kroft examines America's mental health system, which may be failing those with schizophrenia and other severe mental illnesses. Schizophrenia is a brain disease many mass murderers showed symptoms of. . Norah O'Donnell interviews Bill O'Reilly, who talks about his latest book, Killing Jesus.