Monsters are real. Sometimes they're people you know.

Born into a cage of silk, Ada has never mistaken luxury for freedom. Her aristocratic family has already planned her life: marry the man her father chooses, obey the rules of high society, and enjoy every comfort except choice.

Then the Shadows come for her.

The secret criminal order usually recruits from the forgotten: orphans, outcasts, children no one will pay to reclaim. Noble daughters are worth more as ransom than recruits. But when Ada's ransom goes unpaid, her abductor makes a different choice.

She keeps her.

In the Shadows' hands, Ada learns to lie, steal, and kill. They forge her into a weapon aimed at her own bloodline. But as her first mission draws near, Ada must choose: carry out the role they carved into her—or risk everything to escape.

If she runs, the Shadows will punish the only two people she loves: the girl she once saved from death, and the woman who has made torment feel like devotion.

Among the Shadows, mercy means treason. 

Love invites ruin. 

Ada's heart may kill them all.