If you want to read about the author’s suggested reading order, check out this post
This is the first book in the series. It takes place ~323 B.C, and spans Europe, Egypt, all the way to the borders of India, and back.
This book takes place about a thousand years before The Atlantis Papyrus. The story is independent of the first, but you will learn the backstories of some of the discoveries in The Atlantis Papyrus. You will journey to Egypt and a mighty neighboring empire in the Great Green Sea, participate in a battle of Kingdoms and witness an apocalyptic event
This book can be read as a standalone, however, this is part of the anthology because of the next book. You will sweat and go thirsty as you walk with the Persian army of 50,000, sent by King of Kings Cambyses II, in 524 B.C. to the remote Western Desert, to raze the sacred temple of the Oracle of Ammon and enslave its people.
Note: You can get I, II, and III as a Box set at 45% off: buy here
The story takes place about two hundred years after Book III: The Curse of Ammon, and brings back characters from Book I: The Atlantis Papyrus who will deal with things that happened in Book III. You can read this independently too, but will enjoy it more if you read Books I and III. Egypt is the setting.
This story is a standalone that predates the rest, and takes you to world of danger and desperation in ancient Mesopotamia. Come to the great city of Ur of the Sumerians in this story of a royal scribe whose life is about to get very complicated.
While this story is a standalone, it brings back the principal characters from books I and IV. Travel to India on a diabolical mission on behalf of a man with world-conquering ambitions.