R | 1h 43m | Drama, Mystery, Thriller | 7 July 2023 (USA) Observing the most basic rules of mystery thrillers (keep the plot simple and don’t cheat the audience), director Alice Troughton’s “The Lesson” (originally titled: “The Tutor”) isn’t likely to win any year-end awards, but in a summer overflowing with hyper-stylized sequels, thunderously blunt action flicks, and politically-correct animated “message”…