Dear Sirs; As an older (much) reader of Twain's writings, I find much food-for-thought in his works and must say that his (???) Mysterious Stranger is one of my favorite head-ache works. Why should I be cautious about it? Why should I be sceptical about its authorship? Its origin and form? Its intent and literary ranking? Why---why---why? Please advise. Thank you, Tom Smith.