Sixth World Mysteries — Walter E. Mark

One hundred years before the events chronicled in the first book of The Sixth World of Men, there existed a Nasoan investigator whose given name was Natib Pruthame, but everyone called him simply Nat. This talented investigator served prominently in three wars, but like most people of the world of Kosundo, he was tired of war. As fortune would have it, Nat happens upon a case that dangles the promise of ending the never-ending condition of war that had cast a pall over Kosundo for millennia. However, a close friend had already paid a huge price while in pursuit of this promise, a pursuit of something that is known only as the item. Now Nat is pursuing it, whatever it is -- whatever the cost. Will Nat find this mysterious item? If so, what will it cost him and those he loves? Based in the world that award-winning The Sixth World of Men series created, this book introduces a group of incredible stories known as the Sixth World Mysteries.