There are 3 books by Efren O'brien on BookOrb. A strong starting point is Searching for Edgar's Five Dancers (2019). The bibliography below is in publication order, with series grouped in reading order.
Standalone books
Frequently asked questions
How many books has Efren O'brien written?
BookOrb lists 3 books by Efren O'brien.
Where should I start with Efren O'brien?
A good starting point is Searching for Edgar's Five Dancers (2019).
What is the Efren O'brien books in order list?
In publication order: 1. The Deserving (2017), 2. Searching for Edgar's Five Dancers (2019), 3. Down Heartbreak Boulevard (2021).