Robertson returns, and inadvertently gives the mutant Dalek a chance to clone itself. The Doctor escapes from her alien prison with the help of an old friend, and returns to help.
Episode rating
Cast of episode
- The Doctor
- Graham O'Brien
- Ryan Sinclair
- Yasmin Khan
- Captain Jack Harkness
- Robertson
- Jo Patterson
- Leo Rugazzi
- Armen
- Rachel
- Daleks
- Dalek Operator
- Dalek Operator
- Grace O'Brien
- Customs Passenger
- Tourist
- Armoured Police
- Castle Visitor
- Cyberman
- Emily Maitlis
- Cyberman
- Airport Traveller