Sorry, this episode is not currently available

Part 1

The Doctor answers a summons to return home to Gallifrey and races to prevent a tragedy as the outgoing Time Lord president prepares to announce his successor.

Release date:

20 minutes

Last on

Thu 4 Aug 1977 18:20

New 360 Doctor Who game: Pilot the TARDIS though the vortex!

Pilot the TARDIS though the vortex!

Give it a go now!

Series 10: The Videos!

The making of Extremis

See the behind-the-scenes videos, interviews, clips and other goodies!

Play the new micro:bit Coding Game

Dalek Hack

Rebuild, rewire and recode your own Dalek in the new desktop game!

It's Time for Class: Binge watch Series One now

Class Iconic

(may not be suitable for younger audiences).

Buy online

Buy online

Available on: DVD or Video download

From suppliers including: iTunes

Where to buy