Since the blast that reshaped the earth, only twins are born. The one deemed imperfect is branded at birth and sent away. Twins share nothing but the moment of their death: when one dies, so does the other.
But Cass and her twin, Zach, cannot be separated.
In this scorched and broken world, Cass’s bond with her brother may be the most dangerous thing of all.
Shortlisted for The Morningstar Award (best debut novel) in the 2016 David Gemmell Awards for Fantasy; the 2015 R.T. Book Reviews award (best science fiction novel); the 2016 Norma K Hemming Award; and the 2016 Aurealis Award (best young adult novel).
The trilogy was shortlisted for the 2018 Sara Douglass Book Series Award for best SFF book series.