- Jodie Whittaker (The Doctor)
- Mandip Gill (Yasmin 'Yaz' Khan)
- John Bishop (Dan Lewis)
Episode: Arachnids in the UK
Air Date: 2018-10-28
Runtime: 50 min
"Something's happening with the spiders in this city." The Doctor, Yaz, Graham and Ryan find their way back to Yorkshire - and Yaz's family - only to find something is stirring amidst the eight-legged arachnid population of Sheffield.