- Jodie Whittaker (The Doctor)
- Mandip Gill (Yasmin 'Yaz' Khan)
- John Bishop (Dan Lewis)
Episode: Knock Knock
Air Date: 2017-05-06
Runtime: 45 min
Why do floorboards creak? When a sinister landlord shows Bill and her friends the perfect houseshare, they have no idea what lies ahead... knock knock, who's there?