"That phrase appeared in various parts of the world. After thorough research, it was discovered that there were ghostly beings inhabiting the Earth before us... and their traces still exist. These beings resemble humans, and we do not know how that might affect humans themselves and their future.

A research team composed of a group of scientists is attempting to discover these beings and uncover what life was like during their existence.

It's an important novel, built on real scientific foundations, and it contains many surprising discoveries and facts, as is usual with Dr. Nabil Farouk's knack for presenting a rich scientific meal with each new book."