Estelle Fontaine is the most trusted woman in beauty. Maison Fontaine has two million devotees, a waiting list for every serum, and, in one month, a buyout offer that will make its founder richer than God. There is only one rule at the top: stay there. So when a rival chemist gets a little too close to Estelle's signature formula, and a true-crime podcaster starts asking aloud why Maison Fontaine's competitors keep meeting such spectacularly bad luck, Estelle does what she has always done....