TheDoctorfacestheendofhislifeastheMaster'splanshurtleoutofcontrol.Withthesoundofdrumsgrowinglouder,andanancienttrapclosingaroundtheEarth,theDoctorandWilfmustfightalone.Butsacrificesmustbemade,andthedeadlyprophecywarns:"Hewillknockfourtimes."eee

罗斯-泰勒与新重生的博士开始了她的第一次大型TARDIS冒险，他们发现了一家由奇怪的猫人经营的阴险医院，并遇到了两个老熟人，波伊的脸和卡桑德ddd。