Natalie has found the worst kept secret in history. Now, to stay safe, all she has to do is keep her head down and obey the Regent.

But the cost of Natalie's power is catching up with her. The past and present are a blur, Nautilus lurks at the city gates, safety is an illusion, and all around her reality cracks. While Edwin urges her to find an anchor and Leo strives to be her confidant, Natalie is convinced that to save herself, she must fix her family. And fixing her family means finding Brant.

Yet when a desperate move reveals one last puzzle from Christopher, Natalie uncovers the truth of her fate, of what the Coelacanth Project stood for - and facing it will cost her everything.

Regent is the final installment in the award-winning Coelacanth Project Trilogy. Every question will be answered, and all secrets must surface.