Naïda by Scott Overton

The glowing structure at the bottom of a lonely northern lake is not of this Earth. But Michael Hart can’t stay away. His encounter will leave him utterly changed, with astonishing new abilities and a destiny he could never have imagined.

From then on, the choices he makes will affect the very future of humanity, and Michael will either become a hero, or the greatest traitor the world has ever known.

Because he is no longer alone, not even in his own body.

There is another.

Naïda.