2 of 3 people found the following review helpful
5.0 out of 5 stars
Video of tranquility, 30 May 2001
Working brilliantly together, as an unintentional trilogy, the three consecutive stories of Keeper of Traken, Logopolis and Castrovalva firmly establish Anthony Ainley as the new master, even if his performance here and in later stories does descend a little into pantomime territory.
The plot is as deliciously intricate as the artwork of Escher which Castrovalva was based on, with the Doctor's problematic regeneration and two ingenius traps set by the Master for him and his companions. Logopolis introduced the Tardis's Cloister Room, and here more of the police box's architecture is revealed - the gorgeous pinkish-grey Zero Room. As in Keeper of Traken and Logopolis, the costumes and incidental music are also a delight.