The Pearls of Destiny
Clement, Neil E.
An intense gamma ray burst makes a direct hit on planet Irth, snuffing out all life and making it uninhabitable for millions of years to come. Off-planet survivors of this horrific catastrophe discover this was not a random event but a deliberate attack. Now, they want answers. Perhaps even a little payback. And they have just what they need to make this happen: The Pearls of Destiny.