High Alert: The Project, Book 14 (Unabridged)
2017
The Last Option: The Project, Book 17 (Unabridged)
2018
Solomon's Gold: The Project, Volume 15 (Unabridged)
2017
DIE SUCHE NACH ATLANTIS (Project 12)
2023
The Atlantis Stone: The Project, Book 12 (Unabridged)
2025
DAS KREML-KOMPLOTT (Project 11)
2024