Where does the improbable end and the impossible begin? Nick Cardillo (author of The Feats of Sherlock Holmes) presents seven improbable adventures of the World's Greatest Detective collected for the first time in one place. These tales of mystery and suspense will test the minds of Sherlock Holmes and Dr. Watson like never before as they confront a wide array of monsters, madmen, impossible crimes, and the wildest aberrations of nature beyond their wildest nightmares. Also included are two never-before-published short stories which chronicle some of the darkest chapters of Holmes and Watson's career. In "The Adventure of the Deadly Inheritance," a frightened man seeks Holmes' help after his brother suddenly disappeared performing an arcane family ritual, and in "In the Footsteps of Madness," Holmes and Watson descend into the sewers of London to confront a bloodthirsty killer who may be more than just human. The Improbable Casebook of Sherlock Holmes is the long-awaited second collection from an exciting new voice in the world of Sherlockian pastiche.