The Riddle of the Sphinx (Inside No. 9)
The Riddle of the Sphinx is the third episode of the third series of Inside No. 9. It was written by Steve Pemberton and Reece Shearsmith and directed by Guillem Morales. Alexandra Roach stars as Nina, a young woman seeking answers to the Varsity cryptic crossword. Critics have praised the episode, calling it the cleverest of the series to date.