Ethera Grave

Inthe final book of thisdark, dangerous, roller coaster of a space opera trilogy, stretch the limits of your imagination in this mind-bending adventure—perfect for fans of The Expanse and A Long Way to a Small Angry Planet.
Caiden has finally been reunited with his sister Leta after ten years on the run with his unique starship and managed to convince his longtime enemy—Threi—to join his side. But the multiverse isn’t safe yet. Threi’s sister is still the most powerful being in existence. And she still wants to collapse their beautiful, diverse, constellation of multiverses down to one.
 
Now, Caiden and his makeshift family carry the fate of all the worlds in their hands.
The Graven Trilogy
Nophek Gloss
Azura Ghost
Ethera Grave