The Diogenes Club, of which a prominent member is Mycroft Holmes - a character who is none other than the brother of Sherlock Holmes - is one of the most respectable places in London. But, would it be one of its respectable members who poisoned Colonel Sylvester? And the crime took place inside the club! Sherlock Holmes cannot lead the investigation because he himself is a member of the club. It is therefore up to you to discover the culprit and, of course, to prove your deductions.

In good Victorian society or in the slums of London, it's up to YOU to lead the investigation, with only a pencil, an eraser and... your wit!

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