Dot and Bubble

309 – "Dot and Bubble"
Doctor Who episode
Promotional title-card
Cast
Doctor Ncuti Gatwa – Fifteenth Doctor
Companion Millie Gibson – Ruby Sunday
Others Callie Cooke – Lindy Pepper-Bean Eilidh Loan – Cooper Mercy Aldous Ciokajlo Squire – Harry Tendency Niamh Lynch – Hoochy Pie Millie Kent – Valerie Nook Billy Brayshaw – Blake Very Blue Pete MacHale – Gothic Paul Max Boast – Dr Pee Elloise Bennett – Rotterdam Twin 1 Olivia Bennett – Rotterdam Twin 2 Tom Rhys Harries – Ricky September Jack Forsyth-Noble – Weatherman Will Milo Callaghan – Alan K Sullivan Susan Twist – Penny Pepper-Bean Ellie-Grace Cashin – Suzie Pentecost Jamie Barnard – Brewster Cavendish
Production
Directed by	Dylan Holmes Williams
Written by	Russell T Davies
Script editor	Scott Handcock
Produced by	Vicki Delow
Executive producer(s)	Russell T Davies Julie Gardner Jane Tranter Joel Collins Phil Collinson
Music by	Murray Gold
Series	Series 14
Running time	43 minutes
First broadcast	1 June 2024 (2024-06-01)
Chronology
← Preceded by "73 Yards" Followed by → "Rogue"
List of episodes (2005–present)

"Dot and Bubble" is the fifth episode of the fourteenth series of the British science fiction television series Doctor Who. The episode was first broadcast on BBC One in the United Kingdom on 1 June 2024 and released on Disney+ in the United States on 31 May. It was written by Russell T Davies, who originally pitched it for the sixth series, and directed by Dylan Holmes Williams.

In the episode, the Fifteenth Doctor (Ncuti Gatwa) and his companion, Ruby Sunday (Millie Gibson), attempt to save the city of Finetime from human-eating slugs, primarily by communicating with Lindy Pepper-Bean (Callie Cooke) through social media.

The episode features themes of the effects of social media on society, racism, and elitism and has been compared by Davies and critics to the anthology series Black Mirror. The episode received positive to mixed reviews from critics.