There are 1 book by Christopher Mark O'Brien on BookOrb. A strong starting point is Fermenting Revolution (2006). The bibliography below is in publication order, with series grouped in reading order.
Standalone books
Frequently asked questions
How many books has Christopher Mark O'Brien written?
BookOrb lists 1 book by Christopher Mark O'Brien.
Where should I start with Christopher Mark O'Brien?
A good starting point is Fermenting Revolution (2006).
What is the Christopher Mark O'Brien books in order list?
In publication order: 1. Fermenting Revolution (2006).