This Week in United Kingdom

Castrovalva: Part Four

Last updated 04 January 2017

Broadcast: Wednesday 13th January 1982
7:45pm-8:10pm GMT < > « »
BBC One - Wales

Featuring: Peter Davison, Janet Fielding, Sarah Sutton, Matthew Waterhouse, Anthony Ainley

As recursive occlusion threatens to destroy everything and everyone in Castrovalva, the Master's space/time trap is revealed, with Adric at its heart...

Synopsis Source: Doctor Who Guide

Broadcast Source: BBC