Walk Softly Through the Night (2) Quincy M.E. : Season 4 Episode 15

Quincy continues in his quest to get close down Dr. Colella's surgery and stop him from continuing to issue prescriptions for drug addicts. This becomes less of a problem though after Marty Herrera, the young would be doctor, is arrested for killing Dr. Colella! Quincy doesn't believe the boy did it but finds that the evidence seems to be pointing straight at him.