My Husband's Secret Baby With Her Sister - A Billionaire Marriage-in-Crisis, Infidelity and Revenge Romance #991846

She designed the tower. She never saw the crack in her own foundation.
Architect Nora Vance built her marriage the same way she built skyscrapers — every load calculated, nothing left to chance. Then a single mismatched site log, four unaccounted hours on a Thursday afternoon, becomes the first thread in a betrayal she never saw coming.
Her husband, Julian. Her own sister, Ivy. A secret pregnancy no one was supposed to trace back to him.
Nora has three months, a folder full of proof, and one gala where two hundred investors — and her husband's entire empire — are about to learn exactly what she's built her case on.
This isn't a story about being blindsided. It's a story about a woman who gathers her evidence, checks her math twice, and brings the whole rotten structure down on her own terms — before she rebuilds a career, a family, and a love story that finally belongs to no one but her.
If you love billionaire betrayal romance with a fiercely competent heroine, a slow-burn second chance at love, and a public reckoning she orchestrates herself — you'll tear through this one in a single sitting.
Read it today, and watch her bring the house down.