Here is a test, a puzzle for you. It is a faithful account of two most gruesome murders. Can you work out what actually happened in the early hours of one fateful morning in the Rue Morgue? Before you start, here are a few tips. To be a good detective you need the same skills as a good card-player. You must consider and examine every detail, not just the obvious ones. You have to observe every change in a person's face, everything they say, everything...