The first in a darkly seductive YA fantasy duology with an all Black and Brown cast, in which a siren assassin must join forces with the prince she hates to hunt a deadly killer - herself. Words sting. Songs kill. The Cruel Prince meets To Kill a Kingdom in this seductive YA fantasy debut, in which a siren must choose between protecting her family and following her heart in a prejudiced kingdom where her existence is illegal. Saoirse Sorkova survives on secrets. As the last siren in her kingdom, she can sing any man to an early grave - but her very existence is illegal, and if her true identity were ever discovered, it would be her life on the line. By day, Saoirse disguises herself as a fae, pretending to be the perfect soldier-in-training. By night, she satisfies her darker urges working as an assassin for dangerous mercenaries. And all the while, she keeps the biggest secret of all: that she is not always in control of her Siren powers, or her desire to kill. Then a blackmailer threatens her sister, and Saoirse's investigation takes her to the royal palace, and her most dangerous job yet: personal bodyguard to the Crown Prince. Saoirse expects to despise Prince Hayes. But he is kind, thoughtful, and charming, and she finds herself increasingly drawn to him. until he tasks her with investigating a killer plaguing the kingdom. The problem: the killer is Saoirse. Trapped by her deadly double life, Saoirse can't leave the palace until she saves her sister. but who will save her from herself?.