Mr. Vic’s X-Rated Television: Midsomer Murders X-Rated “Shagging the Guvnor’s Wife!”

Joyce Barnaby is the wife of Causton DCI Tom Barnaby. Their only child is daughter, Cully Barnaby.
DS Scott knows the lovely Barnaby women very well. He's been shagging them both starting with Cully after drinks one night at a local pub.
As for Cully's mother and the Guvnor's wife, Joyce Barnaby just happens to come home early from her volunteer job to find Cully and Scott shagging in Cully's bed.