The second book in a YA fantasy series merging high school paranormal romance with Norse mythology, from Tik-Tok sensation Emma Noyes

Charlie Hudson now knows the truth- her twin sister is a Valkyrie, and they're both daughters of Loki, the trickster god. After saving her best friend from Elias and Loki's clutches, Charlie is summoned to appear before the god of gods, Odin, who tasks her with a mission. The Seal that protects humanity from Asgard's magic is starting to break down, and only a human can stop it. To do so, Charlie must convince her old enemy , Elias, to bring her to the underworld. As she and Elias journey to the land of the undead, undeniable attraction burns between them once again. And when they arrive, Charlie finds that Loki is not who she thought he was-and that she may be on the wrong side of this war.