With Jo held prisoner in his TARDIS, the Master forces the Doctor to take him to the underground city of the primitives. Any sign of treachery from the Doctor and Jo will die.
Start a BritBox subscription to watch the next episode and enjoy unlimited access to our great collection of British TV!
This content is not currently available on this device.
Please try again later.Close.
2011.
Close.
2005.
Close.
2001.
Close.
400.
Close.
Something has gone wrong. We hope to resolve the issue very soon. 404.
Close.
Something has gone wrong. Please, try again. 403.
Close.
We’re experiencing technical difficulties, please try again later. 500.
Close.
Something has gone wrong. Please, try again. 2003.
Close.
Something has gone wrong. Please, try again. 2015.
Close.
Something has gone wrong. Please, try again. 2009.
Close.
Something has gone wrong. Please, try again. 2007.
Close.
Something has gone wrong. Please, try again. 2008.
Close.
Something has gone wrong. Please, try again. 2006.
Close.
Something has gone wrong. Please, try again. 2002.
Close.
This browser is not supported for playback of this content, please update to the latest browser version and try again. Please refer to your browser's Help to find out more. 2013.
Close.
Only Safari is supported for playback of this content. Please, switch to this browser. 2013.
Close.
You don't have permission to watch this content.
This can be because you're in a country where BritBox is not available, or because you're using a VPN.
If you believe you're seeing this message in error, please visit britbox.me/location to learn more.
Close.
