I read a book many years ago, the details are sketchy and I have searched the internet for the last 2 years trying to find this book, but it eludes me. Hopefully someone on here will have read it too.
Here are the details as I remember:
The book is set in a binary solar system.
The entities or creatures on the planets orbiting the stars are re-animated beings (humans and others?) that have long since died.
The one star is called Sol. One is dark and one is light. Turns out the stars are in fact super computers and brothers (don't ask me how).
There is a battle between light and dark, good and evil.
The plot twist is
While the light/good side is fighting to defeat the evil/dark side, it turns out that the light side is corrupt and doesn't even know it, and the evil they are trying to fight is actually good.
That really is all I remember. I cannot remember the title name or author.