The Doctor faces the end of his life as the Master's plans hurtle out of control. With the sound of drums growing louder, and an ancient trap closing around the Earth, the Doctor and Wilf must fight alone. But sacrifices must be made, and the deadly prophecy warns: "He will knock four times." 译文(2): 随着主人的计划失去控制，医生面临着生命的终结。随着鼓声越来越响，一个古老的陷阱正在地球周围合拢，医生和威尔夫必须独自战斗。但他们必须做出牺牲，致命的预言警告道:“他将敲击四次。”