Night Heat - You're on the Air

Season 3, Episode 6.
5/7/87.
While Lt. Hogan is being interviewed on a talk radio show, a murderer phones in a challenge. While the team investigates the murder, which took place exactly as the caller said it would, Lt. Hogan becomes the butt of the team's jokes when he undertakes a diet and exercise campaign which includes an exercise bike in his office.