The murder trial of a former Chicago police officer began on Monday with audio of a calm but startling voicemail message that then-71-year-old Lorin Volberding left on his neighbor's phone. "It's about 1:30. I think I just shot and killed Liz," Volberding said on that voicemail message. "I need help." Lawyers waived opening statements at the start of Volberding's bench trial in connection with the Feb.