S5·E11 Murder by S.O.P.

On his way to a Forensic Pathologist convention in Sacramento, the Sheriff of a small town stops Quincy on the road. He was trying to stay awake by sticking his head out of the window. The Sheriff decides to put Quincy in jail for his own good. That night a fire starts in the cells and four men die. The towns' authorities call all the deaths accidental but Quincy, doing some of the autopsies to help the local Dr. is convinced that one of the victims was murdered.