A screenshot from season three episode one of McDonald & Dodds, a British TV police crime drama, no violence, clues to be noticed, pieces to be put together with a big reveal at the end:
That’s Alan Davies playing a linguistics professor. (His Jonathan Creek mystery series is great fun with very clever puzzles; track down an episode if you haven’t seen one.) Notice the book he’s carrying.
The Handbook of Phonetic Symbolism & It’s Function in Contemporary Society.