During seasons five and six, "Quincy" changed quite a bit. Instead of focusing on crime and crime investigation, the show had become a sounding board for many social issues. It also, as a result, became quite preachy! Fortunately, here with "Stain of Guilt", the show returns briefly to its old ways.
The show begins with Quincy working with a film studio on a real-life crime drama. It's about the Sawyer Case--where a woman (Carolyn Jones) was convicted of killing her husband. Quincy, like everyone else, assumes the woman was guilty. However, in preparing the set for the bloody finale, he realizes the way the crime officially occurred could not have been the way the murder took place. So, for the rest of the show, Quincy does his best to prove the woman's innocence as well as determine who did it and how.
While the real killer seemed a bit hard to believe, otherwise this is a very solid and enjoyable episode. And, I just mentioned the most important word..ENJOYABLE--something they forgot to include on many of the preachy social issues shows. Well worth seeing and Sid Haig fans should be happy to see him in his brief cameo.