THE ADVENTURE OF THE EMPTY HOUSE by Sir Arthur Conan Doyle

Three years after Sherlock Holmes' death, Ronald Adair was shot in a locked room. Watson had not arrived at a plausible solution of the case. When he was passing the murder scene, he bumped into an old man who was obviously a bookseller or bibliophile. But when Watson's eyes revert to the old man, he finds not an old bibliophile before him, but Sherlock Holmes. Watson promptly faints....

First published in Collier's Weekly, Sep. 1903, with 7 illustrations by Frederic Dorr Steele, and in the Strand Magazine, Oct. 1903, with 7 illustrations by Sidney Paget.