A Tragedy at Midnight

This Republic murder mystery starts with a radio broadcast by Greg Sherman who solves cases on the air that the local police cannot solve. As he names the perpetrator of a recent murder we see the criminal, who is listening to the show, become alarmed and start to make his escape. The scene shifts to the police department where the chief, fearing for his job, assigns officers to get something, anything, on Sherman and get him off the air.