Betrayal. It's how the Red Wars came to start. It will be how they end.
Rosalie, known as the Red Mask, is the people's protector. She spends her nights in the slums of Aliscia slitting the throats of those who mean her people harm. But by day, she is her mother's ignored daughter-the heir to a bloody throne, left vacant by a murdered father.
When her father's council finally demands a king, the queen makes Rosalie an offer she cannot refuse.
Catch the eye of the crown prince of Bravera, the son of the fae king who killed Rosalie's father, slit his throat and return a magical object stolen during the war. Pave the way for her mother to finish the Red War and assume complete control of both thrones.
Rosalie agrees, binding herself with a blood vow. A vow not easily broken.
Once in the heart of enemy territory, she finds her task not so simple. In order to seduce and kill, she must first get close, and getting close means pretending to open up her guarded heart.
The fate of both kingdoms is at the mercy of a deceitful princess and a deadly curse, but when the heart gets involved, even the strongest minds can fall prey to betrayal.