The War Master: The Master of Callous • Episode 3 The Persistence of Dreams Sets: The War Master 74% 120 votes TARDIS Wiki Share this page {{ shareFeedback }} Copy link {{ copyFeedback }} Overview Reviews Released Wednesday, December 5, 2018 Written by Guy Adams Runtime 52 minutes Login to track and rate! Signal Strength: 40% What's this? Characters & Enemies The War Master The Ood Also featuring: Martine King Available in: The War Master: The Master of Callous Average. Rating: 72%