Series: 10

Original Air date:  June 24, 2017

Number Doctor: 12th

Companion(s): Bill Potts and Nardole

Writer(s):   Steven Moffat

Director(s):  Rachel Talalay

Guest Stars:
Michelle Gomez as Missy
John Simm as The Master
Oliver Lansley as Jorj
Paul Brightwell as Surgeon
Alison Lintott as Nurse

Synopsis: Friendship drives the Doctor into the rashest decision of his life. Trapped on a giant spaceship, caught in the event horizon of a black hole, he witnesses the death of someone he is pledged to protect. Is there any way he can redeem his mistake? Are events already out of control? For once, time is the Time Lord’s enemy.

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