Born into mystery. Shackled to darkness… Khara has spent centuries discovering everything about the Underworld―except her place in it. But when she’s ripped from her home, solving the riddle of her origins becomes more important than ever. With evil stalking her through the dark alleys of Detroit, she finds salvation from an unlikely source: a group of immortal warriors sworn to protect the city. Khara needs their help to unravel the tangled secrets of who and what she is—secrets many seem willing to kill for. But time is running out, and the closer she gets to the truth, the closer necessity binds her to an arrogant fallen angel. Can their shaky alliance withstand that which threatens her, or will her soul fall victim to the unholy forces that hunt her―those that seek the Unborn? From the author of the bestselling Caged series comes a pulse-pounding new series of supernatural romance.

Welcome to the Kingdom of Hades, where even its prodigal princess sleeps lightly. After fighting Soul Stealers in Detroit, Khara hoped to return home to find answers in her father's realm. But the land of the dead offers little information, and far too much tragedy. Now cut off from her brothers, and left only with her dark and unreliable companion Oz, Khara must navigate the centuries-old webs of deceit and betrayal, all while eluding the Underworld's most depraved inhabitant. But she soon finds an unexpected ally in her adopted sister Persephone. Together, they endeavor to right a terrible wrong. And as Khara soon discovers, there's more riding on her success than she ever thought possible.

The hunters become the hunted… With the Underworld still in chaos, Hades, King of the Dead, can’t return home. His traitorous wife, Persephone, remains on the loose—and she’s not the only one. Many of the souls that Khara unwittingly released from the Oudeis have not been accounted for, including former gods, and neither have some of her father’s minions. While Khara and Oz search for Persephone, her brothers work to secure the escaped souls and discover who murdered Drew. But they soon find themselves faced with an even greater problem—one with a name they dare not speak. Forced into shady alliances with would-be enemies, Khara must work to restore the Underworld and place her father on the throne before the world above claims him and everyone else she loves.

When the Hallowed Gates prove not to be the safe haven Khara was promised, she flees to Detroit only to learn that not all is well there, either. The Dark Ones have taken their revenge for her broken promise and one of Khara’s many enemies has orchestrated her mother's disappearance. Khara must work quickly to find her, a difficult task with Phobos lurking in the shadows. And when a mysterious stranger offers a solution to both finding her mother and eliminating her greatest enemy, Khara isn’t certain she can—or should—pay his price. Because deals with the devil only end one way. Even for the princess of the Underworld.

UNBOUND, the fifth and final novel in the Unborn series by USA Today bestselling author Amber Lynn Natusch. With an army immune to the god of fear’s manipulation at her back, Khara’s ability to defeat the immortal Phobos should no longer be in question. But an unexpected incident with her mother has left Khara’s powers compromised, and his time to strike grows near. Soon she will have to make a choice. Soon she will have to trust an enemy. For this twisted game will all come down to two in the end: the god of fear against the princess of darkness. And only one can win.