A hidden futuristic world. Four ancient bloodlines. And three intertwined, extraordinary adventures.

Elin Bodil's life has grown vastly more complicated since the events at Ash Park. Superhuman Clan Hunters now stalk her every move on Auor Island, the Gradys are confined to the safety of their fortified home, and her new powers are more out of control than ever. But, undaunted and determined, Elin, the Gradys, and the Resistance plot a daring operation to set things right. And everything would be just fine-if things only went according to plan.

Now to save her friends and family, Elin must embark on a harrowing journey, bringing her closer to the gray fortress and propelling her on an unexpected path with earth-shattering consequences. And with the Chairman's ever-growing power and Elin's future unclear, she must make new alliances and overcome unforeseen challenges to survive her shifting fate.

Facing new threats, futuristic technology, and unpredicted consequences for their actions, Elin, Aedan, and Tristan return in The Gray Fortress to uncover more myths, magic, and secrets in the second installment of the best-selling Nordri Series!