Contents[Preface]I[The Crime]II[Speculations]III[At the Vale]IV[The Missing Letter]V[A Mysterious Visit]VI[At Leveson Square]VII[Valuable Information]VIII[Enter Mr. Allery]IX[A Confession]X[The Portrait]XI[An Apparition]XII[What Happened in the Night]XIII[The Car in the Dark]XIV[Back in London]XV[The Crisis]XVI[The Criminal Found]XVII[The Wrong Letter]