Colonel James Moriarty
Vital statistics
Sex Male
Nationality British
Family Professor Moriarty (older brother)
Occupation Station-master in the west of England
Behind the scenes
Appearances "The Final Problem" (mentioned only)
The Valley of Fear (mentioned only)

Colonel James Moriarty is the younger brother of Professor Moriarty. He works as a station master in the west of England.[1]

John Watson mentions Colonel James Moriarty when he writes about "the recent letters in which Colonel James Moriarty defends the memory of his brother".[2]