Once again, that cliché in a trenchcoat and fedora is off on another case, one which has him trying to solve a 20-year-old murder mystery and write a play about his career at the same time. Harry soon finds himself, as usual, way over his head as chaos swirls around him—a mousy little woman wants Harry to take on a case for her and then officer Brogan rushes in and arrests her; an actor starts masquerading as Harry; a janitor shows up at all the right (or wrong) times; and the curse of a missing gem appears. But our man Harry manages to wisecrack his way through yet another fast-paced, clue-strewn mystery.