The last installment, *Fiction Fixers 2: The Case of the Missing Manuscript*, was released in 2016. Since then, there have been no announcements or hints from the author, David A. Kelly, about a third book in the series.
However, it's important to remember that:
* Things can change: The author could decide to write a third book in the future.
* Fan demand: A strong enough fanbase could push for a continuation of the series.
Keep an eye out for any news from the author or publisher, and you can always reach out to them directly to express your interest in a third book!