Phantasm by Harleigh Beck

Join the Exodus or die.

Cecilia
After years of evading the Exodus, the secret society responsible for my family’s destruction, I’m back and seeking revenge. Every decade, the Exodus hosts the Reckoning, a deadly gathering where members engage in sinister games. My plan: to cause as much destruction as I can even if it means infiltrating their prestigious party and eliminating them. Nothing will stand in my way—not even Darian Delacroix, the enigmatic Elder who has me in his sights.

Darian
Cecilia Van Der Meer believed she could escape the Exodus, but she was mistaken. As the heiress to one of the largest fortunes in the country and the daughter of the Elder behind my family’s demise, she has become a target. Fortunately for me, she’s now caught in my web, and I refuse to let her slip away. I’m determined to break her, just as her father shattered my family. But the stakes are high, and the lines between love and vengeance are about to blur.

What’s it going to be, Cecilia? Marry me or die?