business and personal goals. >> but detectives caught a break. some of the witnesses were able to give the cops a description of the killer and his vehicle. >> it is a possible white male with a beard. he's about 5'10", 5'11", in his 30s. >> a police department sketch artist was able to render this portrait, a face with a dark beard, no mustache, and most arresting of all, two piercing eyes. the witnesses remembered those vividly. >> come forward and face justice. don't be a coward. >> who was the man in the sketch? >> the hunt begins with one giant clue, the getaway car caught on tape. are police close to catching the killer? coming up -- >> i'm telling you, you were there when rusty got shot -- >> -- when "dateline" continues.