The Stolen Throne (Dominions, 2) by Abigail Owen

My twin sister is the true queen of Aryd. She survives, hiding and clinging to life in the desert, while I reign as the false queen alongside the monstrous King Eidolon. There’s only one escape from this gilded prison: Reven. My Shadowraith. My heart. Only the shadows that he struggles to control are growing more sinister, more powerful.

It’s just a matter of time before they turn on him…and on me.

Even escape doesn't mean true freedom, though, when we're still on the run from Eidolon’s unstoppable armies. And when we discover there’s a traitor among us, I have no choice…I must become the queen I was never meant to be.

Because as one evil hunts me, the other loves me more than himself.

And my fate lies with both.

The Dominions series is best enjoyed in order.
Reading Order:
Book #1 The Liar’s Crown
Book #2 The Stolen Throne
Book #3 The Shadows Rule All