It's a club like no other. Only the most important women receive an invitation. But one daring young reporter is about to infiltrate this female-run secret society, whose beguiling members are caught up in a dark and treacherous business.

For years, rumors have swirled about an exclusive, women-only social club where the elite tastemakers of NYC meet. People in the know whisper all sorts of claims: Membership dues cost $1,000 a month. Last time Rihanna was in town, she stopped by and got her aura read. The women even handpicked the city's first female mayor. But no one knows for sure.

That is, until journalist Jillian Beckley decides she's going to break into the club. With her career in freefall, Jillian needs a juicy scoop, and she has a personal interest in bringing these women down. But the deeper she gets into this new world-where billionaire "girlbosses" mingle with the astrology-obsessed-the more Jillian learns that bad things happen to those who dare to question the club's motives or giggle at its outlandish rituals.

The select group of women who populate the club may be far more powerful than she ever imagined.

And far more dangerous too.