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ITV纪实悬疑剧。 本剧共六集，改编自真实案例。1985年8月6日晚，白屋农场内有五人中弹身亡，警方初步断定是患有抑郁症与精神分裂症的Sheila发病时枪杀了自己的养父母与年仅六岁的双胞胎儿子后自杀。可随着调查深入，警方发现Sheila竟是被人用枪抵着喉咙杀死的，此案的凶手另有其人。。The dream of sending humans to Mars is closer than ever before. In fact, many scientists think that the first person to set foot on the Red Planet is alive today. But where should the first explorers visit when they get there? Horizon has gathered the world's leading experts on Mars and asked them: where would they go, if they got the chance - and what would they need to surviv...。