Boulder Weekly, 01 Oct 2015 – A week ago Friday, lawyers for Richard Kirk, a Denver man who is charged with the murder of his wife after eating a cannabis edible during a domestic disturbance in April 2014, changed his original plea from not guilty to not guilty by reason of insanity. The pot made him do it. Had he not ingested a marijuana edible, he wouldn’t have murdered his wife, Kristine, who was on the phone with 911 when she was shot.