The Billionaire's Club in Manhattan felt less like a social hub and more like a temple carved out of money and ambition. Cassie had seen luxury before, but nothing like this. The building towered above the Hudson, a sweeping curve of glass and silver like a futuristic palace. Inside, the lighting was soft gold, glinting off champagne flutes and polished marble floors that reflected the skyline itself. Everywhere she looked, there were clusters of powerful men and women, CEOs, heirs, innovators, foreign royalty, speaking in low tones that carried both confidence and secrecy. A live orchestra played near the panoramic windows, their music underscored by the quiet hum of billion-dollar conversations. Sebastian guided her with a steady hand, his presence both reassuring and co

