A mysterious series of apparently random killings in Kansas City, mostly committed in isolated spots along walking trails, came to an end when the killer deviated from his pattern with a brazen, execution-style shooting in broad daylight on a city street, according to Jackson County prosecutors. The fifth and final killing came shortly after noon on Aug. 13, when 22-year-old Fredrick Demond Scott allegedly followed a man from a city bus, crept up behind him on the street and shot him in the head — before turning and getting right back on a bus. Like the other four victims Scott...