|It seems pretty clear he is the running man. The police sketch looks a lot like him...if you find his obituary online and find the young photos of him at the time of the murder, when he was very thin, he looks a good deal like the the sketch. Those same photos show him in the green wind-breaker that the running man was reported to have worn.|
If I remember correctly the Bill character, I forget his real name now, lived on Olive St. or somewhere South/Southwest of East Rock...George st area maybe, I forget. So...he ran down Huntington St., across Whitney Ave towards East Rock, went through the hood/grand ave area or wooster area unnoticed and went home to Olive st or wherever. That's why they're looking for that person in that taxi, because it was in that area.