A Cage of Fire. The Gilded Cage Duet, #4

THE PAST DOESN'T DIE. IT WAITS IN THE ASHES. Nikolai Volkov rules London's East End with a heart of ice and a fist of iron. Beside him reigns Anya, the woman he took from a cage and crowned his queen. Together, they have built an empire that no enemy dares to touch and a family that Nikolai would burn the world to protect. But the one thing Nikolai couldn't kill was his own ghost. When his most loyal lieutenants begin turning up dead, carved with a symbol that hasn't been seen in twenty years, the Volkov empire begins to fracture from within.
The enemy isn't a rival gang or a faceless government agency. It is a brother Nikolai buried two decades ago. Mikhail Volkov has returned from the grave, carrying the scars of a fire that should have consumed him. He doesn't just want the crown. He wants to burn Nikolai's life to the ground, starting with the heir to the Volkov throne-their son. With their child taken and their allies turning traitor, the rules of the game have changed.
Nikolai is no longer the hunter; he is the prey, paralyzed by a brother's betrayal. But Mikhail forgot one thing: Nikolai didn't just teach Anya how to survive. He taught her how to kill. The Wolf is wounded. But the Queen is hunting. And this time, they aren't fighting for territory. They are fighting for the only thing that matters."A devastating, high-octane conclusion to The Gilded Cage Duet. Sterling proves that the hottest fires burn in the coldest hearts."