All The Pretty Little Lies by Avelyn Paige

Vesper Rossi has always known her life isn’t her own. Born into the notorious Rossi family, her destiny was set—to marry the heir of the ruthless Petrov empire and solidify a deadly alliance. Her intended’s twin cousins, Oscar and Zaire, offer her a dangerous lifeline and the chance to escape.
When their plan fails, Vesper is taken captive. For two years, she endures unspeakable horrors, her body exploited by a faceless enemy intent on breaking her. Once she serves her purpose, she is sold—not to strangers, but to the very men who failed her.
Oscar and Zaire, along with the rest of their Second Sons family, return with vengeance in their hearts and regret fueling their every move. Failure is not an option this time. When Vesper learns that her captivity held was the result of a more malevolent plot, she will stop at nothing to get back what was stolen from her.
With her body, heart, and mind scarred but unbroken, Vesper is ready to reclaim her power with the Second Sons at her back and in her bed.

Blood will be spilled, alliances will crumble, and no one will be spared.