I find when it is really hot outside, it is good to go back to some old favourites; they are not very taxing on the brain. This past week I picked up Arthur Conan Doyle's Sign of Four. This edition comes from Broadview Press. I forgot what a drug addict Holmes was...the opening and closing of the book feature his cocaine habit. What i really liked about this edition (and the others in the series) are the great footnotes, introduction and appendices. They give a fabulous opportunity to look beyond the traditional text and look at the context. Two thumbs up!