Manhunt: Luigi Mangione and the CEO Murder - A Special Edition of 20/20

393.083 - 413.635 Crime Reporter

When detectives went back and started looking at these images frame by frame over and over again, they noticed a couple of things. First of all, they noticed how far away the shooter was from Brian Thompson. Detectives were saying to us that if this had been somebody who was really a trained assassin, he wouldn't have fired from 10 or 12 feet away. He would have fired from five or seven feet away.