Captain Dance's arrival in London excites the creatures in MIO's cells, including the ghastly Cutter. Searching for a cure, Robert takes some of the potions in his Grandfather's lab. Garson tells Robert of a relative who may still be alive.

Cast: Mohamed Adamaly, Nadika Aluwihare, Tom Bateman, Ruby Bentall, Alex Bertuchi, Amy Bowden, Paul Leon Bridger, Ricky Champ, Enzo Cilenti, Sinéad Cusack, Chiara Goldsmith, Richard E. Grant, Natalie Gumede, Tom Rhys Harries, Stephanie Hyam