I AN INVITATION TO DINNER
II RUTH
III ARNOLD SCENTS MYSTERY
IV THE FACE AT THE WINDOW
V AN UNUSUAL ERRAND
VI THE GLEAM OF STEEL
VII "ROSARIO IS DEAD!"
VIII THE DUTIES OF A SECRETARY
IX A STRAINED CONVERSATION
X AN UNEXPECTED VISITOR
XI AN INTERRUPTED LUNCHEON
XII JARVIS IS JUSTLY DISTURBED
XIII CASTLES IN SPAIN
XIV SABATINI'S DOCTRINES
XV THE RED SIGNET RING
XVI AN ADVENTURE
XVII THE END OF AN EVENING
XVIII DISCUSSING THE MYSTERY
XIX IN THE COUNTRY
XX WOMAN'S WILES
XXI ARNOLD SPEAKS OUT
XXII THE REFUGEE'S RETURN
XXIII TROUBLE BREWING
XXIV ISAAC AT BAY
XXV MR. WEATHERLEY'S DISAPPEARANCE
XXVI ARNOLD BECOMES INQUISITIVE
XXVII THE LETTERS IN THE SAFE
XXVIII TALK OF TREASURE SHIPS