https://www.amazon.com/Autopsy-Planet-Earth-Sci-Fi-Novel-ebook/dp/B076CMPN3M
What happens when an alien race claims to have created mankind only to abandon them early in their evolution. Now, eons later, they return to help a failing society find peace harmony, and balance? But what if the price to achieve such a lofty goal is too high? What will mankind do?