Peter Capaldi’s final episode of Doctor Who this Christmas will feature Pearl Mackie as Bill Potts and be called Twice Upon a Time, it was revealed this evening (23 July) during a cast panel at San Diego Comic Con. Viewers will have to wait until Christmas to discover exactly how Bill, who will appear throughout the episode, makes her return.上[快来看视频网]在线观看伦理片神秘博士:圣诞特别篇,限制级电影神秘博士:圣诞特别篇高清版手机在线观看。