Inspector Lewis and D.I. Hathaway work on "The Indelible Stain" in this season 6 finale of the Inspector Lewis series.
This is another complex Lewis mystery. An American professor, Paul Yelland, with his outrageous theories, comes to Oxford to lecture and becomes the target of a group opposed to his ideas, which are considered racist.
Yelland is later found dead by hanging. He had been invited to speak by married professors, Anne and Robert Fraser, in order to bring attention to their department. Robert is having an affair with one of his students, Nina. Nina has been receiving hate texts telling her to go home. Fraser believes an antifascist group is responsible for Yelland's death. But it turns out that Yelland has an interesting history in the area - he had sold forged antiques to two clients, and he was the father of a staff member and had left the mother before the child was born.
Then another death occurs.
Somehow I recognized Starsky and Hutch star David Soul as the professor. He moved to England in the 1980s and has enjoyed an interesting stage career over there, including starring in "Jerry Springer, the Opera," "Deathtrap," "Mack and Mabel," and "Blood Brothers," as well as TV and film there. I give him a lot of credit.
This is a good mystery. I like the Lewis series very much and hope they continue to film them.