The Waters of Adamah

On the planet Adamah, in a fit of jealous rage against his sister, Athanasius kills his immortal mother, Aryanna. Banished to The Darkness realm by the Creators, he vows his revenge against them and any pure-born child of his immortal bloodline.
Ashamed of their failures, the Creators send two immortal Guardians down to Adamah, Jonathon and Athena, to protect and raise a new pure-born child, and any who shall come from her.
That was in the beginning.
On Earth, in the present day, Lesley Jones is dying. A brain tumor is slowly killing her. Her time is running out and there is nothing the doctors can do.
Her mother, Katharyn, has kept family secrets all her life. Not even Lesley knows them. But Athanasius does, and his deadly creatures are sent from The Darkness to hunt them down.
Will Lesley die before discovering her family secrets? Will her daughter, Amy, be left alone in a world that is doomed? Or will Athanasius finally succeed, escape The Darkness, and wreak havoc across all the realms?
An ancient prophecy may be the key.
Their only hope is to escape Earth. But how? And, to where?