XI. "... SPEED THE PARTING GUEST!"

XII. MR. MANDERTON is NONPLUSSED

XIII. JEEKES

XIV. A SHEET OF BLUE PAPER

XV. SHADOWS

XVI. THE INTRUDER

XVII. A FRESH CLUE

XVIII. THE SILENT SHOT

XIX. MR. MANDERTON LAYS HIS CARDS ON THE TABLE

XX. THE CODE KING

XXI. A WORD WITH MR. JEEKES

XXII. THE MAN WITH THE YELLOW FACE

XXIII. TWO'S COMPANY

XXIV. THE METAMORPHOSIS OF MR. SCHULZ

XXV. THE READING OF THE RIDDLE