Three brothers, John Brown, Mark Brown and Paul Brown, are all suspected of murder. One day, Sherlock Holmes receives an anonymous note saying: "? Brown. He is the murderer."
Which of the three Brown brothers should the police arrest?
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Answer to previous riddle: The poison was in the ice cubes and Irene drank the iced tea too quickly for the ice to melt.

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Riddles | Sherlock Holmes
Mystery / ThrillerThe Case of the Curious Conundrums | A tricky test of lateral thinking Could your lateral thinking skills rival those of the master of elementary, Sherlock Holmes himself? Put your brain through its pages with this curated collection of riddles and...