Trial has begun for the former Dallas police officer who shot and killed an unarmed neighbor in his own home. Prosecutors told the jury that Amber Guyger was distracted by a phone call with a lover. Guyger tells 911 that she thought Botham Jean was a burglar in HER apartment. With Nancy Grace to discuss the case: Julie Rendelman, New York Criminal Defense Lawyer; Joe Scott Morgan, Forensics Expert; James Shelnutt, former Atlanta Metro Major Case detective, SWAT Officer; Dr. Bethany Marshall Psychologist; and reporter Dave Mack. Watch at Crimeonline.com.