Art student Jo Kozak and her fellow classmates and best friends, Caroline, Finch, Amrita, and Saz, are one another's muses--so close they have their own language and so devoted to the craft that they'll do anything to keep their inspiration alive. Even if it means naively resorting to the occult to unlock their creativity and to curse their esteemed, if notoriously creepy, professor. They soon learn the horrible price to be paid for such a transgressive ritual.

In its violent aftermath, things are changing. Jo is feeling unnervingly haunted by something inexplicable. Their paintings, once prodigious and full of life, are growing dark and unhealthy. And their journey together--as women, students, and artists--is starting to crumble.

To right the wrong they've done, these five desperate friends will take their obsession a step too far. When that happens, there may be no turning back.