star-crossed lover

I'm Isa Borgia, the daughter of the most powerful Don in Corvina. My father worries I'll marry the wrong man on a whim, so he arranges for me to be engaged to Luca, the rising heir of the Marino family. It's an arranged marriage, but that doesn't mean I've lost all my say. The very least I can do is choose a ring I genuinely like. So, I go to the mafia auction. When the diamond ring appears as the final jewel of the night, I lift my paddle. Just before the gavel falls, an arrogant voice comes from behind me. "A country bumpkin like you thinks you can compete with me? Do yourself a favor and leave." The auction hall goes quiet for a few seconds. The only sound comes from the camera shutters clicking around the hall. I turn and see a woman in a gold couture gown. Her mouth curves in a casual smile, as if she owns the place. Before I can say a word, the auctioneer rushes to close the bid.
"Sold! Congratulations to Ms. Sofia Lopez for winning the final lot, the Eternal Star!" My brows pull tight, and a hot spike of anger rises in my chest. "You ended the bidding early! Do you even follow the rules here?" Sofia turns around and gives me a once-over, her gaze sharp as a blade. 
"Rules?" She lets out a cold laugh. "Come on. I'm Luca Marino's favorite godsister. Around here, I make the rules!" I can't help but laugh. What a coincidence. So, she's my fiance's godsister. I pull out my phone and call him. "Luca, your godsister just snatched the engagement ring I picked out. How are you going to handle this?"

For eighteen years, I, Althea Quinn Calder, wanted nothing more than torn shorts, hiking boots, and a detector in my pocket. My family was known across the stars as a glamorous treasure-hunting team, but what most people never knew was that our real fortune came from finding alien artifacts hidden inside ancient ruins. At a charity gala on Sobek Space Station, I was forced into an elegant dress and high heels, only to discover that the night was not just another social event. Our old rival, Alistair Draven, appeared again, watching us like a predator and hinting that he already knew about the secret mission my father had planned. Even worse, my father had hired a new intern without telling me. His name was Kaelan Frost, a brilliant student with green eyes, a Capellan accent, and the most dangerous effect on my concentration. I hated the idea of adding anyone to our team—until he joined our next expedition to New Haven, where a dive into the wreck of the Queen Anne's Revenge led me to a hidden metal box, a ruby ring, and a cipher connected to the lost lover of the infamous space pirate Edward Teach. The clue pointed us from a sunken ship to a protected estate, then to a secret garden where another message revealed something far bigger: Teach had hidden not only pirate treasure, but the missing fortune of a destroyed Spanish treasure fleet. Every clue brings Kaelan and me closer, but it also brings Alistair closer to us. He has followed every expedition we ever took, and this time, if he discovers what I am carrying, the next treasure we uncover may become the one that gets us killed.