Contents [I—The Photograph] [II—The Voice On The Wire] [III—Visitors] [IV—Crenshaw] [V—Another Woman] [VI—The Grey-Stone House] [VII—Surprises] [VIII—The Story] [IX—Decoyed] [X—Skirmishing] [XI—Half A Lie] [XII—Carpenter] [XIII—The Marquis] [XIV—The Slip Of Paper] [XV—Identified] [XVI—Another Letter] [XVII—In The Taxi] [XVIII—Doubt] [XIX—Marston] [XX—Playing The Game] [XXI—The Key-Word] [XXII—The Rataplan] [XXIII—Caught] [XXIV—The Candle Flame]