In the "intense and captivating" (Kirkus Reviews) conclusion to the New York Times bestselling Diabolic series, the Empire teeters on the edge of destruction as rumors spread that Nemesis is still alive.

Three years ago, Tyrus Domitrian shocked the galaxy by killing the woman he swore to love forever. The woman for whom he upended the Empire. The woman with whom he wanted to build a new and brighter future.

Now, the once-idealistic heir apparent has become the cruel Emperor Tyrus, wielding his authority with an iron fist, capable of destroying planets with a single word, controlling all technology with a simple thought. He has bent the Grandiloquy to their knees, and none has the power to stand against him.

But there is a muttering among the Excess. They say that Nemesis is not truly gone. They whisper of her shadow spotted in distant star systems. They say that Nemesis lives. That she will rise and rally the people to topple the man who was once her truest love--and is now her fiercest enemy.