Henry Daniell is an unethical professor in "Under Cover of Night," an MGM programmer starring Edmund Lowe and Sara Haden, a very young Dean Jagger, and Nat Pendleton.
We see the crime brought about up front, and then watch "Chris Cross" (Lowe) figure it out. It all hinges on a sort of which came first, the chicken or the egg scenario.
Professor Marvin Griswald is planning on taking credit for his wife's (Sara Haden) research and has plans for himself and a younger woman. His wife gets wind of it and is upstairs packing to leave him; Marvin has to act quickly and get his hands on her notes.
Lowe was a leading man with Broadway credits who started working in films in the teens. By this time, he was a character actor. Openly gay, he married actress Lilyan Tashman, also openly gay, probably for the sake of their careers, but the couple obviously enjoyed a great friendship. They were a very popular Hollywood couple and known for lavish entertaining and high living. When Tashman died of cancer, Lowe was at her side.
Atmospheric film movies quickly and has a very good cast.