Alexis Parker Box Sets:

The second box set in the Alexis Parker series, contains three books in one.
The third box set in the Alexis Parker series, containing three books in one
The fifth box set in the Alexis Parker series, containing the thirteenth, fourteenth, and fifteenth books in the series.

Julian Mercer Box Sets:
The first three books in the thrilling, Julian Mercer vigilante justice book series on Kindle and Kindle Unlimited, which includes Condemned, Betrayal, and Subversion in the omnibus edition.