Detective Arthur Hill is on the case to catch a suspected killer, but he's relying on a witness who is fearful because they survived a gunshot from the suspect. Meanwhile, Detective Stewart is called to a busy intersection where an elderly woman suffers a horrible attack from a homeless man armed with a knife.

With the help of his partner Det. Hill, Det. Stewart tracks down the killers of a good Samaritan who was attempting to stop a crime in progress.