The Last Mrs Parrish !

I read a lot and I didn’t have this figured out AT ALL. I don’t want to give too much away! From the book jacket:

Amber Patterson is fed up. She’s tired of being a nobody: a plain, invisible woman who blends into the background. She deserves more—a life of money and power like the one blond-haired, blue-eyed goddess Daphne Parrish takes for granted.

To everyone in the exclusive town of Bishops Harbor, Connecticut, Daphne—a socialite and philanthropist—and her real-estate-mogul husband, Jackson, are a couple straight out of a fairy tale, blessed with two lovely young daughters. Amber’s envy could eat her alive . . . if she didn’t have a plan.