Madame Cipher

She built a billion-dollar empire on one rule: never need anything you can't provide for yourself.

At thirty-seven, Cipher has the money, the power, and the reputation. She's the kind of woman who ends meetings with a look and runs a tech empire that answers to no one but her. She hasn't cried in fifteen years. Hasn't let anyone close in two. Hasn't stopped performing long enough to notice that the woman behind the armor is running on empty.

Then the black envelope arrives.

DIAMOND CODE.

No address. No explanation. Just an invitation to twenty-four hours inside a world built for women exactly like her, powerful, isolated, and starving for something they don't have language for yet.

Sir Rune has that language.