A U.S. Army special forces officer faces a military trial for murder after he admitted that he killed a Taliban bombmaker in Afghanistan after he concluded the man had made a bomb that killed two marines who served with him. Nancy Grace discusses the case against Major Matt Golsteyn with California lawyer & former US Air Force JAG officer Andrew Cherkasky, private investigator Vincent Hill, who served in the U.S. Army as a counter intelligence specialist, Atlanta criminal defense lawyer & former prosecutor Holly Hughes, psychologist & lawyer Dr. Brian Russell -- host of Investigation Discovery's "Fatal Vows" series, and Crime Stories producer Alan Duke.