The Mystery of Cloomber is a classic mystery novel by Sir Arthur Conan Doyle. It is not my wish to achieve literary success, nor have I any desire by the graces of my style, or by the artistic ordering of my incidents, to throw a deeper shadow over the strange passages of which I shall have to speak. My highest ambition is that those who know something of the matter should, after reading my account, be able to conscientiously indorse it without finding a single paragraph in which I have either added to or detracted from the truth.