The Musgrave Ritual had been a triumph in Sherlock Holmes¿s budding career as the world¿s all-time most singular detective. But some said he had erred, leaving the tale without a conclusion. Could this be true? If so, had that inconclusiveness to the case haunted him, even at his last bow into retirement onto the Sussex Downs? New evidence, from two centuries past, calls him to reopen the case.