Sam Sisavath Purge of Babylon series

1. The Purge of Babylon
2. The Gates of Byzantium
3. The Stones of Angkor 
3.1 The Walls of Lemuria
3.2 The Fields of Lemuria
4. The Fires of Atlantis 
5. The Ashes of Pompeii 
6. The Isles of Elysium 
7. The Spears of Laconia
8. The Horns of Avalon 
9. The Bones of Valhalla
9.1 Mason's War