Just finished reading Magpie Murders by Anthony Horowitz. No doubt many of you are already aware of it, but just in case: it is two mysteries in one, one of them an homage to Dame Agatha and the other a contemporary puzzler. While there is a bit of spoofing going on, the author clearly respects the genre of the "Golden Age" mysteries. If you like Dame Agatha, you may like this one too. See if you can solve the riddle!