The award-winning author of The Miseducation of Cameron Post makes her adult debut with this highly imaginative and original horror-comedy centered around a cursed New England boarding school for girls—a wickedly whimsical celebration of the art of storytelling, sapphic love, and the rebellious female spirit.

Our story begins in 1902, at the Brookhants School for Girls. Flo and Clara, two impressionable students, are obsessed with each other and with a daring young writer named Mary MacLane, the author of a scandalous bestselling memoir. To show their devotion to Mary, the girls establish their own private club and call it the Plain Bad Heroine Society. They meet in secret in a nearby apple orchard, the setting of their wildest happiness and, ultimately, of their macabre deaths. This is where their bodies are later discovered with a copy of Mary’s book splayed beside them, the victims of a swarm of stinging, angry yellow jackets. Less than five years later, the Brookhants School for Girls closes its doors forever—but not before three more people mysteriously die on the property, each in the most troubling way.