Welcome to Venom and Vows, where vampires don't fall in love… they negotiate.

In the frostbitten land of Heedmoor, vampires don't mingle with humans—they contract them. Each year, vampires bind themselves to a single human sanctum, trading vampire venom for blood in a perfectly polite, deeply unsettling arrangement. Elite young women compete in a week-long spectacle called Venom and Vows—a contest of charm, etiquette, and entertainment. It's a tidy arrangement. Civil. Proper. And absolutely not meant for romance.

Enter Seraphina Halloway, who has no interest in attempting to be a lady—or in marrying the arrogant lord her father chose to settle his debts. What she does want is to save her family's failing spinach farm. The prize money from a dangerous horse race, held at the end of Venom and Vows, could save her family, so she makes a reckless decision: to disguise herself, break every rule, and enter a world where discovery doesn't mean disgrace… it means death for both herself and her beloved geminox—the very illegal to own crossbreed of horse and unicorn.

Complicating matters is Nash Everthorne—the most revered vampire in Heedmoor. Ancient, powerful, and devilishly handsome in a way that feels both illegal and deeply inconvenient, Nash is entirely unprepared for a human girl with sharp wit, sharper defiance, and absolutely no respect for vampire etiquette. Her defiance unsettles him. Her wit amuses him. Her very existence threatens everything he's built.

One secret endangers Seraphina's life, her family's future, and the fragile laws that divide two worlds. When rebellion becomes forbidden love, someone will pay with blood. The only question is who survives.