The Enigma DimensionSeries Episode Number: 4
First Broadcast: Tue 28 Feb 2017 - ~9:00pm UTC (United Kingdom)
Running Time: 70 minutes
The Dalek Time Strategist has a new plan to ensure final victory in the Time War. As its forces gather for a huge assault on the enemy, ahead of the fleet something hovers above the planet of the Time Lords. And on Gallifrey itself, shadows move among the Cloisters. The Time Lords face a threat alien to their entire universe. To save their world, the War Doctor and his allies must enter the Enigma Dimension...