Isabelle Paradiso is a modern-day math professor with a gift for time seeing. But when her world is threatened, she has no choice but to risk a journey to 17th-century London and save a banished fae warrior.

Imprisoned by the sadistic criminal Locke, Theo North is not only struggling to survive his captivity but also to hide who he truly is.

After a daring prison break, Isabelle and Theo are forced to race across England, evading his captors and finding a safe haven.

But the close quarters and the constant danger lead to a dangerous attraction, despite that fae/human relations are forbidden in Theo's world. He's reluctant to give in to their mutual desire, but the beautiful, intelligent woman may be his undoing, even as she may be the savior for them all. He suspects Isabelle has the hidden ability to produce portals through time and space, a trait that's both rare and desired among the fae.

Could Isabelle really be the fabled Rift Singer?

Still, for the safety of Isabelle and her human realm, Theo is resigned to return to an uncertain fate in Faery—but Izzy is determined to win her warrior prince and will do everything in her power to keep him, including developing her craft. Can she embrace her destiny? And will their love withstand the pull of another realm, or will they be torn apart once more?