From The Perry Mason TV Show Book (Revised)
Professor Ronald Hewes suspects someone of trying to murder him. The stuffy, condescending English teacher is (secretly) the author of the salacious best-selling novel, L’Affaire Annabelle. Trouble is, he stole the idea for the book from a term paper written by one of his former students, who had killed herself two years before. The prof is getting pressure from the dead girl’s sister for a payoff. Hewes is also paranoid that his estranged wife Laura wants his money and that she might be trying to do him in. Hewes hires Perry to mediate the property settlement. When someone stabs the professor to death, Perry defends the accused-—Laura Hewes.