Epic feature length finale episode for Jodie Whittaker's thirteenth doctor. The 90 minute episode was part of the BBC's centenary celebrations which was billed as "Her final battle. Her deadliest enemies. The Thirteenth Doctor faces multiple threats from Daleks, Cybermen and the Master in a fight for her very existence."
Sacha Dhawan played her arch enemy and nemesis 'The Master' who returns one last time with his evil plan to wipe the Doctor from history.