There are 1 book by Gail O'Brien on BookOrb. A strong starting point is This is Gail (2017). The bibliography below is in publication order, with series grouped in reading order.
Standalone books
Frequently asked questions
How many books has Gail O'Brien written?
BookOrb lists 1 book by Gail O'Brien.
Where should I start with Gail O'Brien?
A good starting point is This is Gail (2017).
What is the Gail O'Brien books in order list?
In publication order: 1. This is Gail (2017).