Ep 3. The Riddle of the Sphinx

Inside No. 9 is a British television anthology series created by Reece Shearsmith and Steve Pemberton, who also star in each episode. The show is known for its unique and unsettling blend of dark comedy and horror, and each episode features a new story and set of characters.

In season 3 episode 3, titled The Riddle of the Sphinx, viewers are introduced to Nina (Alexandra Roach), a young mathematics student who is struggling to solve a complex puzzle. When she visits her former professor, Dr. Squires (Steve Pemberton), for help, she becomes embroiled in a twisted game of intellect and deception.

The episode takes place almost entirely within the confines of Dr. Squires' home as he and Nina attempt to solve a series of increasingly difficult puzzles. As the game progresses, the stakes become higher and the consequences more dire.

What starts as a simple challenge quickly turns into a battle of wits, as Nina and Dr. Squires begin to suspect that there is more at play than just a harmless puzzle. As they delve deeper into the mystery, they realize that there are hidden forces at work that threaten to upend their lives.

The Riddle of the Sphinx is a masterclass in tension-building, with each scene ramping up the stakes and leaving the audience on the edge of their seat. The episode is expertly crafted, with clever writing and engaging performances from both Roach and Pemberton.

The themes of the episode explore the dangers of obsession and the lengths people will go to in order to satisfy their intellectual curiosity, no matter the consequences. It is a cautionary tale that will leave viewers pensive long after the credits roll.

This episode of Inside No. 9 is a must-watch for fans of the series, but even those who are new to the show will find themselves drawn in by the gripping storyline and the skillful ways that it builds tension and suspense.