Arthur Conan Doyle and The Strand
washingtonpost.com
washingtonpost.com
Of Doyle's non-Sherlock works, The Lost World is the first that comes to my mind. Great fast read, also highly recommend! (Though nothing beats the full and complete collection of Sherlock Holmes, see [1] for the PDF and [2] for the actual book).
1: https://maggiemcneill.files.wordpress.com/2012/04/the-comple...
Casebook is still under copyright inside the U.S. (only there). That's why the site splits out a U.S. legal version.
http://www.ihearofsherlock.com/
I can also recommend the two novels by Anthony Horowitz, House of Silk and Moriarty. These are the only two contemporary works to earn the seal of approval from the Conan Doyle Estate. And Horowitz, creator of the beloved ITV British detective drama "Foyle's War", knows a thing or two about mystery and suspense ;)
But I don't think you can really discuss Conan Doyle without commenting on the influence of Edgar Allan Poe. And how even to this day in internet forms like creepypasta and #nosleep, Poe's innovations continue to, ahem, haunt us.
Adventures in the Strand by Mike Ashley review – Arthur Conan Doyle beyond Sherlock Holmes
https://www.theguardian.com/books/2016/feb/24/adventures-in-...
First result worked for me, and is the same URL as the article even though it's a different title.