CONTENTSI.[The Girl Across the Hall]II.[The Tragedy]III.[Janet Pembroke]IV.[Doctor Post's Discovery]V.[Several Clues]VI.[The Inquest Begins]VII.[I Give Evidence]VIII.[An Awful Implication]IX.[George Lawrence]X.[Person or Persons Unknown]XI.[The Chained Door]XII.[Janet is Our Guest]XIII.[Janet is Mysterious]XIV.[Mrs. Altonstall]XV.[Who is J. S.?]XVI.[Leroy Arrives on the Scene]XVII.[Can Leroy Be Guilty?]XVIII.[The Rooms in Washington Square]XIX.[A Talk With Janet]XX.[The Initialed Handkerchief]XXI.[Fleming Stone]XXII.[A Call on Miss Waring]XXIII.[Lawrence's Statement]XXIV.[The Chain of Evidence][I]