The Doctor arrives on Mars in the year 2059 and joins the first human Earth colony led by Adelaide Brooke. The day he arrives is also the day history records the entire settlement destroyed in an unknown cataclysm with all members of the settlement being killed. Everyone soon realizes that colonists are being infected by some unknown agent and are being transformed into zombie-like creatures. For reasons that are eventually explained, The Doctor is not prepared to save them and tells Brooke that she has to die. He quite torn by this decision and eventually chooses another path, one that will have other repercussions for him in the future. Tears of Ours。没有人能做自己命运的旁观者。火星之水。我和Doctor遇见的开始。绝望中的抗争。历史进程中的人。时间领主的真正职责不是救人。怎么加标题。火星鬼水》是《神秘博士》2009特别篇第二弹，于11月15日在BBC1播出。制作人Russell T Davies透露，这集会和接下来的2集关系密切，但并不是三部曲的第一部分。本集献给2009年10月过世的前"神秘博士"编剧兼制作人Barry letts。 故事发生于2059年，火星。博士有了新搭档Adelaide Brooke（Lindsay Duncan饰演），火星殖民地Bowie基地1号基地的首领。她可以说是迄今为止博士遇到的最聪明、最坚强的伙伴。Peter O'Brien客串演出Adelai。
