Shadows always return to the darkness...

Scarlett Monrhoe and her two sisters are the continent's most feared assassins, trained since childhood by a ruthless Assassin Lord. Wild, unpredictable, and deadly, they wield their blades without mercy.

After a tragic night, Scarlett finds herself imprisoned in a noble's household, trapped and forgotten—until an irresistible offer comes her way. Complete one perilous assignment, and she'll finally grasp the revenge she's craved for a decade against the Fae Fire Prince who murdered her mother.

But when children begin to vanish from her homeland, Scarlett's quest for vengeance is plunged into chaos. Joined by old friends, a jilted lover, and a mysterious stranger who whispers of forbidden Fae magic in mortal lands, she descends into the world's darkest shadows.

As long-buried secrets unravel, Scarlett must confront a darkness that stretches far beyond her own kingdom. Will she sacrifice everything to save the innocent, or will the allure of retribution consume her?