I. TO BEG PARDON OF THE READER
II. THREADS OF IRON
III. WHAT THE PAPERS SAID
IV. DEADLY PERIL
V. HELD BY THE ENEMY
VI. ILLONA!
VII. THE AWAKENING
VIII. THE DOUBLE NOUGHT
IX. AN ODD MISSION
X. THE WIND OF CIRCUMSTANCE
XI. MY FATHER’S STORY
XII. MISSING
XIII. AN AFFAIR IN FULHAM
XIV. SOME CURIOUS FACTS
XV. A SCRAP OF MUSIC
XVI. TRICKED
XVII. ACROSS EUROPE
XVIII. “A LADY TO SEE YOU, SIR!”
XIX. ANGELA IS FRANK
XX. TO-MORROW!
XXI. I MEET ILLONA
XXII. “REMEMBER THE NAME!”
XXIII. THE SIX CIRCLES
XXIV. SOME PLAIN FACTS
XXV. I MEET HIS EXCELLENCY
XXVI. WITHOUT PREJUDICE
XXVII. THE SHOP-WINDOW CLUE
XXVIII. THE DARK HOUSE
XXIX. CONCLUSION