Classics are classics for a reason. This was immensely readable, and a mystery I've heard about and never read. Sherlock Holmes is perfect - arrogant and confident and right. 'Elementary', Dr.Watson narrates, so we don't know anything that Watson doesn't and he doesn't know what Holmes is doing or thinking. An interesting perspective. My book from the library had what must be the smallest font legally allowed, and the smallest space between lines - everything was crammed into 128 pages. However, I persevered and the mystery and suspence had me turning the pages through squinting eyes and anxious nerves. I thought it might be more cliched, but no. Good writing, good plot, and good characters are why we call this book a classic.
This counts as my first classic for Kathrin's Summer Classic Challenge, and also an early entry for the 15 books/15 decades challenge (1900s).