Chapter Titles: (1) Doom (2) Disappearance of Janet Dale (3) Trail of the Wolf (4) The Open Window (5) The Tower Room (6) The Crystal Ball (7) Gun Fire (8) The Man Trap (9) The Mystic Summons (10) The Foe Unmasked (11) Through Prison Walls (12) Behind the Veil (13) Attack at the Inn (14) Confession (15) Retribution