It was 7 am. the milkman will , began his round in London's suburbs. He get to the residence Marie Curie ,brilliant scientist James Richmond 's home . He put down the milk in front of the door and see a dead body through the plate glass window ,in the sitting room. As soon as the saw him he have called police . But no had some clues police have abandoned the matter . So , family has got him touch with a private detective called MacArthur.
In the evening , after to be passed on the crime 's placed , MacArthur have gone met family's victim to ask some questions . He speak to the sister of James Richmond : “Hi ,your brother did he have enemy ? Uh.... non,why ? Because I discovered a cigarette butt too, so someone who smoked was on the crime's place .Can you tell me more about possible suspect ? Well , yes , I know recently the came back angry against his gardener , Edward London . Afterwards It seems to me he has dismissed him. It's the last word ? No! At work He was always in competition with some John Gordon . That do two good suspect. Thank you .I tell your if I have a new.”

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One week later, the detective MacArthur get together, family, suspects,and a policeman. “Good afternoon ,thank you for displaced . You have a new ? Ask the victim's sister . Why I'm here ? Ask in yam round John Gordon. And me Why ? Ask Edward London . je vais y venir .At first, I found a cigarette butt, and then a foot print .So, I suspected M. London ,since you smoke and you had on argument with the victim. But I check .Your alibi and you were in the train this night . End then , the autopsy as revealed presence of deadly poison in the victim's blood . End foot prints correspond to security shoes , wear only in laboratory . So I deduct it's you M. Gordon . Yes , the death of James Richmond Richmond helps your career .” End John Gordon, confess his crime .