Join Sherlock Holmes and the Baker Street Irregulars for another dangerous and thrilling mystery, this time involving the supernatural. . . . Can you solve the case of the conjured man? Casebook #2 in this exciting series gives Sherlock Holmes and the Baker Street Irregulars a most unusual case to crack! A young woman named Elsa Hoffman seeks out the detective when her aunt dies mysteriously. As Ozzie, Wiggins, and the gang start investigating, seemingly real ghosts suddenly appear and Elsa is followed by shady characters. Holmes must decide if he and his assistants can solve the case without facing mortal danger. Join the Irregulars for a mysterious and frightening adventure and decide if this is a case of the supernatural or dark con men, thieves, and murderers!