谁是最有嫌疑的人

市区某大学集体宿舍内发现一具高度腐烂的男尸，尸体死者是该校化学系教授曹安，今年58岁。据反映，最后有人见到他，已经是三周前的事了，之后他就没有露面了。而这三周恰好是曹教授的假期，所以也无人对此加以关注。而且每晚，他的卧室也不开灯，所以大家都认为他外出了。如果不是这天三名学生来找他，恐怕尸体要更迟些才会被发现。

尸体被发现的地方正是教授的卧室，现场基本无打斗痕迹。估计教授是在没有察觉的情况下被人用钝器击中后脑致死的，故只留下少量挣扎痕迹。他身上只穿着便装，歪躺在他的床边。床头柜原本放置的一瓶某药厂出品的锌一钙口服液被教授临死前挣扎时抓得变了形，大概案发前他正准备服用。警方由此估计凶手是教授的熟人，故将嫌疑集中在发现尸体的三个学生——梅瑰、郑宁、陈凌身上。因为曹教授是他们的导师，与他们最熟悉。

在现场上过蜡的地板上，发现了大量蜡泪以及一根烧尽的蜡烛。由于工作性质，曹教授平时极为谨慎，绝不可能将蜡泪滴到上过蜡的地板上，所以警方认定这是凶手留下的痕迹。根据记录，恰好在三周前最后有人见到曹教授那晚七点到七点半这段时间内，学校突然停电。虽然尸体已经高度腐烂，但根据以上情况，案发时间就在停电那会儿。

于是，警方对三名学生进行不在场调查。

梅瑰称：“停电那会儿我和男友在校外一间餐厅吃饭，中途我们起了争执，当时许多人都看见了，可以为我作证。不过，我看郑宁挺可疑，因为他最近抄袭别人的论文，被教授发现了，教授扬言要扣他的学分。”

郑宁称：“停电那晚我在一个网吧上网，可忘了带钱，结果被老板一顿臭骂后记了帐，所以我有充分的不在场证明。但我看陈凌最有可能是凶手，因为曹教授一直说他和我们几个格格不入，弄得陈凌很没面子。”

陈凌称：“我那天晚上拉肚子，在校医院挂盐水。停电时我帮一个护士点了蜡烛，她能为我作证。我看梅瑰才最有嫌疑，因为教授不久前发现她生活不检点，说要到校领导那里揭发，要学校勒令她退学，免得玷污了教授的名声。”

经调查，三人所说的不在场证明都不假。为此警方找来具有丰富经验的老刑警严炎来协助调查。

严炎经过精密的思索，终于推翻了三人的不在场证明，并从中找出最有嫌疑的一人。经警方强大的政策攻势，那人终于承认了自己的罪行。

那么，谁是最有嫌疑的人呢？三人的不在场证明又如何被推翻呢？

[答案]

首先，要推翻三人的不在场证明，就只有推翻警方推断的死亡时间。姑且认为警方是对的，那么因为停电是在突然的情况下发生的，故在这之前，教授应该开了电灯。案发时，室内应该已经点了蜡烛。而且凶手离开时也没有将蜡烛熄灭。既然连蜡烛都来不及熄灭，凶手就更不会想到要把电灯关上。所以直到凶手离开电灯的开关依然是开着的。可是，在后来的三周时间里，教授的卧室里却没有灯光！这说明，不能仅凭蜡泪断定。可能是凶手刻意制造的假象而断定案发时间，所以三人的不在场证明没有作用。

其次，要找出现场中一样极有可能是教授记号的物品。

请注意，郑宁曾说：“曹教授一直说他和我们几个格格不入。”为什么呢？相信看过《柯南——复活的死亡信息》的人一定有些明白了：注意曹教授系化学系教授，他们的名字有一个特点。那么就会发现：“曹安”的拼音首字母是ca，“梅瑰”是mg，“郑宁”是ZN，“陈凌”是cL。在化学符号中，ca指钙，mg指镁，Zn指锌，而cl指氯。钙、镁、锌都是金属元素，而氯却是非金属的卤族元素。所以，作为化学教授的曹安才会说陈凌和其他几人格格不入。锌一钙口服液在睡前服用效果最佳，曹教授不会不知遭这一点。而且他也不可能会在。客之时服药，所以那抓在手中的口服液( Zn-ca)，正是在告诉别人，凶手是“Zn”——郑宁。

Introduce:The urban district discovers a male cadaver that decays highly inside some university dormitory, body dead is Cao An of professor of this school Chemstry Department, this year 58 years old. According to report, last someone sees him, had been 3 weeks of things before, he did not appear later. And these 3 weeks of holiday that are Professor Cao fitly, so unmanned also try to pay close attention to to this. And every night, his bedroom also does not open the lamp, so everybody thinks he went out. If not be this day of 3 renown students,will look for him, be afraid the body wants some later just can be discovered. The ground Founder that the body is discovered is the professor's bedroom, the spot does not have tussle trace basically. Estimating a professor is be used below the circumstance that was not aware of blunt implement hit afterbrain deadly, reason leaves a few struggling only trace. He goes up to wearing dishabille only personally, crooked the bedside that lies in him. The zinc that a bottle of when ark of the head of a bed places originally some pharmaceutical factory manufactures fluid of one calcic profess to convinced is taught when struggling before on one's deathbed, catch so that changed form, probably he is preparing to take before case hair. Police reckons the murderer is the professor's acquaintance from this, reason centers suspicion in the Mei Gui of 3 students —— that discovers a body, Zheng Ning, Chen Ling to go up personally. Because Cao teachs the adviser that is them, the as most familiar as them. On the floor board that passes candle on the spot, discovered many candle tear and a candle of burn oneself out. As a result of working property, cao Jiao is awarded at ordinary times very careful, had gone up absolutely impossibly that candle tear arrives on the floor of candle, so police maintains this is the mark that the murderer leaves. According to the record, be in fitly 3 last someone sees Professor Cao arrived at 7 o'clock that evening before week 7:30 inside this paragraph of time, the school is abrupt power cut. Although the body has decayed highly, but according to above circumstance, case hair time is in power cut at that time. Then, police has not attendant investigation to 3 students. Mei Gui says: "I and male friend are in power cut at that time outside school a dining-room has a meal, we removed midway conflict, a lot of people saw at that time, can be my attest. Nevertheless, I see Zheng Ning Ting doubtful, because he borroweds recently the paper of others, was discovered by the professor, professor threaten should deduct his credit. " Zheng Ning says: "Power cut I get online in an Internet bar that evening, can forget to take money, result by the boss a curse is adscript account, so I have sufficient not attendant proof. But I see Chen Ling is a murderer likely most, because Professor Cao says he and us all the time a few antipathetic, do so that Chen Ling does not have face very much. " Chen Ling says: "I that day in the evening have loose bowels, brine is hanged in school doctor courtyard. I helped a nurse burn the candle when power cut, she can be my attest. I see Mei Guicai have suspicion most, because teach not long ago to discover her life is profligate, say to want to be exposed there school leadership, want the school to compel her