The Hound of the Baskervilles
The Hound of the Baskervilles is considered by many as the finest of the four novels, if not the finest single part of the entire Holmes canon. It is the most complicated Holmes story in terms of composition. The play between its ghost story/supernatural aspect, and the rational/scientific methods of Sherlock Holmes adds another facet to the mystery. It is also unique in the extent to which Dr. Watson is brought forward, while Sherlock Holmes is "off stage."
The "colonial edition" was a common feature in the publishing world of Conan Doyle. Sheets of books were either sold to other publishers, or separately issued by the publisher for distribution, usually in a lesser binding, for sale at a lower price in other parts of the British Empire. Although sometimes printed from the same plates on inferior paper, this colonial edition of The Hound of the Baskervilles contains the sheets of the first English edition, with replacement colonial edition title page, and a variant, though still quite attractive binding.
Bloomington by Gaslight: