When an enforcer for a bookie pushes a "mouse" of a man too hard, the former is, surprisingly, the one who winds up needing an ambulance. Kojak doesn't believe the eyewitness description of the assailant. How could such a small man have done the deed? He (Irving Abernathy) was furious because a surgeon who "killed" his mother with an unnecessary surgery was pressuring him for money the doctor needed to pay his bookie; the enforcer was part of the pressure. When Kojak learns the circumstances, he arrests Abernathy (but omits Miranda warnings, warrants, and other civil protections); in interrogation Kojak sees the mouse turn into a MAN. Justice is served.
—jeaneva