A most random selection leads Tom and Louis to the planet Spiridon, where invisible creatures abound. Louis points out the Daleks’ apparent newfound cartographic advantage, and Tom proposes a new enemy for the Thals to face.

The random selector brings Tom and Louis to season 15 of Doctor Who, to discuss rustic racism and glow skulls. Louis remarks on the Doctor's moral values, and Tom unpacks the implication of K-9's character arc in the serial.

At long last, Tom and Louis convene to discuss the finale of Sherlock's third series. Louis points out how Sherlock literally kills two metaphorical birds with one metaphorical stone, and Tom brings up question relating to Sherlock Holmes's ties to the Doctor Who universe.