Undone. Bound to them, #4

Four men. One promise. No place to hide. When Cassia wakes cuffed miles above Europe, she remembers exactly what she asked for-one night of total surrender. Berlin delivers more. A penthouse wired with eyes. A necklace that never stops watching. Lucien, Theo, Dante, and Nikolai teach her how it feels to be wanted, protected, and owned. But someone else is watching too. A photo arrives from a blind spot in the building, and the game turns lethal.
To keep Cassia safe, the men demand everything: her trust, her voice, her choice to live under their eyes by day and in their hands by night. Undone is a possessive, high-intensity romantic novel featuring power exchange, voyeuristic tension, found devotion, and a heroine who chooses her chains-and the men who wear them with her.