The Riddle of the Sphinx

A very cryptic episode as the clues reveal themselves thick and fast as the show goes on. If you ever found crosswords difficult to do then this is the programme for you as it unravels the thinking behind the cryptic crosswords.

A University of Cambridge professor's rooms are broken in by a young lady who works in a bakery, all she wants to do is to prove how smart she is to her boyfriend.

The professor plays along and the lady proves rather adept in cracking the puzzles but there is something rather fishy going on.

An enjoyable fiendish instalment, there is even a Chekhov gun quip. Pemberton and Shearsmith have to be admired by the way they have constructed the episode.