Series: 9
Original Air date: September 26, 2015
Number Doctor: 12th
Companion(s): Clara Oswald
Writer(s): Steven Moffat
Director(s): Hettie MacDonald
Guest Stars:
Michelle Gomez as Missy
Julian Bleach as Davros
Jami Reid-Quarrell as Colony Sarff
Synopsis: Trapped and alone in a terrifying Dalek city, the Doctor is at the heart of an evil Empire; no sonic, no TARDIS, nobody to help. With his greatest temptation before him, can the Doctor resist? And will there be mercy?