Prosecutors have filed a first-degree murder charge against a 47-year-old Observatory Park man accused of killing his wife while she pleaded for help on a call with a 911 operator. Richard Kirk purchased marijuana candy about 6:40 p.m. Monday and is accused of shooting his wife to death about three hours later. ... The 44-year-old woman spent 13 minutes on the phone with the 911 operator. According to dispatch recordings, it took officers more than 15 minutes to arrive at the brick Tudor home. ...