BOOK I. THE YACHT CHAPTER I. Down and out CHAPTER II. Up and in CHAPTER III. Thunderbolt Six CHAPTER IV. The Black Thing in the Sea CHAPTER V. What I Found in My Cabin CHAPTER VI. The Woman of the Past CHAPTER VII. The Secret Behind the Silence CHAPTER VIII. The Great Surprise CHAPTER IX. The Game of Bluff BOOK II. THE HOUSE WITH THE TWISTED CHIMNEY CHAPTER I. The Shell-Shock Man CHAPTER II. The Advertisement CHAPTER III. The Letter with the Purple Seal CHAPTER IV. The Tangled Web CHAPTER V. The Knitting Woman of Dun Moat CHAPTER VI. The Lightning Stroke CHAPTER VII. The Red Baize Door CHAPTER VIII. "When in Doubt, Play a Trump" CHAPTER IX. The Rat Trap BOOK III. THE DARK VEIL CHAPTER I. The Girl With the Letter CHAPTER II. The Hermit CHAPTER III. The Chair at the Savoy CHAPTER IV. The Spirit of June CHAPTER V. The Bargain CHAPTER VI. The Last SÉance BOOK IV. THE MYSTERY OF MRS. BRANDRETH CHAPTER I. The Man in the Cushioned Chair CHAPTER II. Mrs. Brandreth CHAPTER III. The Condition She Made CHAPTER IV. The Old Love Story CHAPTER V. The Man with the Brilliant Eyes CHAPTER VI. The Pictures CHAPTER VII. Sir Beverley's Impressions CHAPTER VIII. While We Waited CHAPTER IX. The Good News CHAPTER X. The Climax CHAPTER XI. What Gaby Told CHAPTER XII. The Woman in the Theatre CHAPTER XIII. Mrs. Brandreth's Story BOOKS BY C. N. & A. M. WILLIAMSON