Still reeling from the revelations of the sirens' broken curse, Mary's life is turned upside down by an unexpected gift from her youngest sister. Cordelia investigates conspiracies and makes a deal with the American government as she confronts the consequences of freeing the Aos Sí.

Meanwhile, Amy struggles to master her newly acquired mage sight, with the help of the Danjou mages and her mother Mira-who soon encounters a challenge of her own.
Far across the sea, Kyoko plays a high-stakes game of politics in Australia while Thomas uncovers a new crisis that places the entire Pacific Ocean in grave danger.

In the midst of prophecies and politics that threaten to pull them apart, can the Bant family find the strength to stick together?

Bestselling author Laura Engelhardt returns to the rich and compelling world of her award-winning novel, Sirens Unbound, to deliver this stunning sequel. Follow the Bant siblings as they find themselves drawn ever closer to war in this character-driven, magical story about sirens, fairies, and family ties.

Readers love the Fifth Mage War Series!
"Engelhardt weaves a complex story of faes and foes, political intrigue, romance and more."
"The problems the characters face are interesting, difficult, and complicated. I wanted to read something different from the more formulaic books I was reading from established authors and this was new."
"This book seemed to have a little of everything. A little science, a little magic, a little politics, a little secret agents and a little romance, so I think there's something for everyone."
"Finally, a fantasy for adults, where the heroines are out of high school."