"Chicago" 8×08 Little House On The Prairie (23Nov1981)

Charles visits a grief-stricken Mr. Edwards in Chicago after John Jr. died in an apparent street accident. However, suspicions quickly arise over the circumstances of John, Jr.'s death once his boss reveals he was investigating business corruption and was about to go public with his findings. It soon becomes clear that John Jr. was murdered, and it is up to Charles and Edwards to uncover the truth.