There are 3 books by William M. O'Brien on BookOrb. A strong starting point is Florissant Girls (2021). The bibliography below is in publication order, with series grouped in reading order.
Standalone books
Frequently asked questions
How many books has William M. O'Brien written?
BookOrb lists 3 books by William M. O'Brien.
Where should I start with William M. O'Brien?
A good starting point is Florissant Girls (2021).
What is the William M. O'Brien books in order list?
In publication order: 1. The Vampires of Eden (2013), 2. Florissant Girls (2021), 3. Meet Me at St. Margaret's (2023).