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　　 警員展開了深入而廣泛的調查。一名醫學院的教授被邀趕來協助破案。 Police launched an in-depth and extensive investigation. A medical school professor to be invited to come to the detection.

　　 教授仔細地察看了死者胃中取物，不到半個小時，暴斃之謎便揭曉。教授說：「死 者並非自殺，亦不是被殺，而是死於無知的『它殺』」！ Professor carefully to see from the stomach of the deceased, less than half an hour, then died of the mystery revealed. , Said: 'The deceased is not suicide, is not killed, but from ignorance of the 'kill it,'!

　　 大家莫名其妙，何為『它殺』！？那砒霜又是從哪裡來？
　 教授說：「砒霜是在死者腹內產生的。」死者生前每天也會服食「維他命 C」，這完全沒有問題！問題出在她晚餐吃了大量的蝦，吃蝦本身也是沒有問題的，所以她的家人吃了都沒有事，但死者卻同時服用了「維他命 C」，問題就出在這裡 !
Members puzzled, what is' kill 'it! ? The arsenic is from the U.S. military for carrying rice seedlings H Gao
, Said: 'arsenic in the abdominal deceased.' Deceased will be taken every day, 'Vitamin C', which is not! Problem was that she eat dinner a lot of shrimp, Chiha itself is not the problem, so she had no family to eat something, but at the same time the deceased was taking the 'vitamin C', the problem is out here!

美國芝加哥大學的研究人員，通過實驗發現，蝦等軟殼類食物含有大量濃度較高的 －五鉀砷化合物。Researchers at the University of Chicago in the United States, found through experiments, such as soft-shell shrimp food contains a lot higher concentration - five potassium arsenic compounds. 

　　 這種物質食入體內，本身對人體並無毒害作用！但是，在服用「維生素 C」之後，由於化學作用，使原來無毒的－五鉀砷 ( 即砷酸酐，亦稱五氧化砷，其化學式為As205)
，轉變為有毒的三鉀砷 (即亞砷酸酐 )，又稱為三氧化二砷，其化學式為 (As203)，這就 是人們俗稱的砒霜 !
Fresh all this material in itself no toxic effects on the human body! However, in taking 'vitamin C', due to chemical reaction, the original non-toxic - five potassium arsenic (As anhydride, also known as arsenic oxide, the chemical formula for As205)
Changed to a three potassium toxic arsenic (ADB arsenic anhydride), also known as arsenic trioxide, a chemical formula (As203), which is commonly known as the people of arsenic!