XIX. Alone [242]
XX. They Hated Mystery [254]
XXI. "A Study" [268]
XXII. A Loyal Heart [280]
XXIII. Puzzling Questions [293]
XXIV. An Ally [306]
XXV. A Crisis [319]
XXVI. A Strange Change [331]
XXVII. A Retrograde Movement [344]
XXVIII. "Something had Happened" [358]