Jeffrey macdonald news, photos videos - abc news, Browse jeffrey macdonald latest news and updates, watch videos and view all photos and more. join the discussion and find more about jeffrey macdonald at abcnews.com. Jeffrey macdonald | murderpedia, encyclopedia murderers, Dr. jeffrey robert macdonald (born: october 12, 1943), also known as the green beret killer, was a former member of the elite military unit, who was tried and. The jeffrey macdonald information site: 1979 trial; aug. 1, 1979 jeffrey macdonald case trial transcript. august 1: mildred kassab. f u r t h e r p r o c e e d i n g s 9:30 a.m. this cause came on for further trial before the.