Sherlock through the Looking Glass

"In his memoirs, Conan Doyle quotes a reader, who judged the later stories inferior to the earlier ones, to the effect that when Holmes went over the Reichenbach Falls, he may not have been killed, but was never quite the same man. The differences in the pre- and post-Hiatus Holmes have in fact created speculation among those who play "The Great Game" (making believe Sherlock Holmes was a historical person). Among the more fanciful theories, the story "The Case of the Detective's Smile" by Mark Bourne, published in the anthology Sherlock Holmes in Orbit, posits that one of the places Holmes visited during his hiatus was Alice's Wonderland. While there, he solved the case of the stolen tarts, and his experiences there contributed to his kicking the cocaine addiction."


~Wikipedia