There are 3 books by W. O'Brien on BookOrb. A strong starting point is Hoo Doo Island (2019). The bibliography below is in publication order, with series grouped in reading order.
Standalone books
Showing 1 of 3 titles.
Frequently asked questions
How many books has W. O'Brien written?
BookOrb lists 3 books by W. O'Brien.
Where should I start with W. O'Brien?
A good starting point is Hoo Doo Island (2019).
What is the W. O'Brien books in order list?
In publication order: 1. Hoo Doo Island (2019).