Nick Carter Stories No. 148, July 10, 1915; The Mark of CainTHE MARK OF CAIN; Or, NICK CARTER’S AIR-LINE CASE.Reading editionChapter navigation23 reading sectionsGo to chapterChoose a chapter…Front matterTHE MARK OF CAIN; Or, NICK CARTER’S AIR-LINE CASE.Chapter I · WHAT THE GIRL DID.Chapter II · A FRIEND IN NEED.Chapter III · THE MAN OF LAST RESORT.Chapter IV · PICKING UP A TRAIL.Chapter V · NICK FINDS A CLEW.Chapter VI · THE CODE TELEGRAM.Chapter VII · INTO A NET.Chapter VIII · CAUGHT IN A CORNER.Chapter IX · BY THE AIR LINE.Sheridan of the U. S. Mail. By RALPH BOSTON.Chapter IV · A WARNING.Chapter V · A STRONG LEAD.Chapter VI · JACK HINES IN LOVE.Chapter VII · THE FRAME-UP.Chapter VIII · A DOUBTFUL JOKE.WILLIE’S MISTAKE.HARD ON THE WARDEN.NO MORE DUNNING.AN OLD LADY’S DILEMMA.THE NEWS OF ALL NATIONS.The Nick Carter StoriesPrevious chapter ←Front matterNext chapter →Chapter I · WHAT THE GIRL DID.All chapters and sections (23)Opening pagesFront matterOther sectionsTHE MARK OF CAIN; Or, NICK CARTER’S AIR-LINE CASE.Chapters123456789Other sectionsSheridan of the U. S. Mail. By RALPH BOSTON.Chapters45678Other sectionsWILLIE’S MISTAKE.HARD ON THE WARDEN.NO MORE DUNNING.AN OLD LADY’S DILEMMA.THE NEWS OF ALL NATIONS.The Nick Carter StoriesEdited by CHICKERING CARTER.◇← Front matterCHAPTER I. WHAT THE GIRL DID. →