Tập 271: Ran vật lộn với một ký ức trong khi Conan điều tra vụ ám sát một doanh nhân có liên quan đến một vụ tham nhũng.

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Ran, feeling she met the mysterious man before, attempts to remember why. Jodie interrupts the daydreaming Ran in class and asks her the meaning of X to which she is unable to answer correctly. On the way home, they meet Jodie who takes them to the cafe in a department store to warn them about a serial groper. Conan notices a business man named Norihisa Kisugi making a suspicious phone call to a private detective named Katsunori Chuujou. Chuujou demands Kisugi to pay four times the promised amount or he will not hand over the investigation documents concerning an unknown individual. Kisugi agrees and enters the department store only to be killed by the individual. A coincidental blackout occurs at the same time, and when the power returns, Kisugi is found dead on the top of an escalator with ○×△ written on an envelope. The police understands the message to be a dying message, and using Chuujou's phone, allows them to locate the last caller, Kisugi. Kisugi reveals that he hired the detective to search for an embezzler in the company. The documented that contained the embezzler's identity is missing from Chuujou's envelope and the police discern the embezzler must be the culprit. Kisugi then hands them Chuujou's list of fifty-eight suspects he had received. The police decrease the suspects down to thirty-one after investigating the alibis of the suspects. Conan tells the police a line of blood is found on the edge of the envelope and explains part of Chuujou's dying message must be on the escalator. Using a luminol reaction, they discover □ revealing the whole message to be □○×△; Conan notes the square is much bigger than the other three symbol. (Source: Wikipedia)