Murder 101 (1991)

Plot:

Charles Lattimore, an author of a book about a famous murder trial, meets up with his ex wife Laura, at her college, where he is due to give a series of lectures, on how to write a successful novel. When one of his students, asks to meet him later that night, to discuss the course, and is found murdered. Lattimore has no alibi, and he begins to suspect, that the subject of his book, has arranged the killing, to get back at him, for the evidence, Lattimore gave during the trial.