Ep 3. Thin Ice

In Doctor Who (2005) season 10 episode 3, titled "Thin Ice," the Doctor and his companion, Bill, find themselves in London in the year 1814 where they discover that a monster is lurking beneath the frozen surface of the Thames River. As they investigate, they soon find themselves in danger and must figure out a way to stop the creature before it causes too much destruction.

Along the way, the Doctor and Bill encounter a group of street urchins who are being exploited by a wealthy businessman named Lord Sutcliffe. As they try to help the children, the Doctor and Bill discover a darker side to Lord Sutcliffe's dealings and must confront him in order to put an end to his nefarious plans.

As always, the episode is filled with action, adventure, and humor, as the Doctor and Bill navigate their way through the dangerous waters of 19th century London. Fans of the show will enjoy seeing the unique perspective the episode offers on this historical time period, as well as the dynamic between the Doctor and Bill, which continues to evolve throughout the season.

Overall, "Thin Ice" is a thrilling and entertaining episode of Doctor Who that will leave viewers on the edge of their seats until the very end.