Written by Joy Wilkinson
"We want certainty. Security. To believe that people are evil or heroic. But that's not how people are. You want to know the secrets of existence? Start with the mysteries of the heart. I can show you everything if you stop being afraid of what you don't understand, if you trust me."
| Episode Title | Premiere Date |
| The Witchfinders | 25/11/2018 |
The Doctor, Ryan, Graham and Yaz arrive in 17th century Lancashire and become embroiled in a witch trial, run by the local landowner. As fear stalks the land, the arrival of King James I only serves to intensify the witch hunt. But is there something even more dangerous at work? Can the Doctor and friends keep the people of Bilehurst Cragg safe from all the forces that are massing in the land?
| Character | Cast |
| The Doctor | Jodie Whittaker |
| Graham O'Brien | Bradley Walsh |
| Ryan Sinclair | Tosin Cole |
| Yasmin Khan | Mandip Gill |
| King James | Alan Cumming |
| Becka Savage | Siobhan Finneran |
| Willa Twiston | Tilly Steele |
| Old Mother Twiston | Tricia Kelly |
| Smithy | Arthur Kay |
| Alfonso | Stavros Demetraki |
| Role | Crew |
| Writer | Joy Wilkinson |
| Director | Sallie Aprahamian |
| Producer | Alex Mercer |
| Series Producer | Nikki Wilson |
| Executive Producer | Matt Strevens |
| Executive Producer | Chris Chibnall |
