There are 2 books by Keith O'Brien on BookOrb. A strong starting point is Fly girls (2018). The bibliography below is in publication order, with series grouped in reading order.
Standalone books
Frequently asked questions
How many books has Keith O'Brien written?
BookOrb lists 2 books by Keith O'Brien.
Where should I start with Keith O'Brien?
A good starting point is Fly girls (2018).
What is the Keith O'Brien books in order list?
In publication order: 1. Cut Your Losses! (1996), 2. Fly girls (2018).