| 名称 | 曾有两次:《神秘博士》2017圣诞特别篇 |
| 原名 | Doctor Who 2017 Christmas Special |
| 又名 | Twice Upon A Time |
| 国家/地区 | 英国 |
| 类型 | 剧情 / 科幻 / 悬疑 |
| 上映 | 2017-12-25(英国) |
| 导演 | 瑞秋·塔拉蕾 |
| 主演 | 彼得·卡帕尔迪 / 大卫·布拉德利 / 马克·加蒂斯 / 珀尔·麦基 |
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.