After a plague of vampires was unleashed in the world, Katie was kicked out of the safe haven of her Amish community for her refusal to adhere to the new rules of survival. She enters an outside world of unspeakable violence with only her two friends and a horse by her side. And yet through this darkness come the shining ones: luminescent men and women with the power to deflect vampires and survive the night. But can they be trusted, and are they even people at all? In this sequel to The Hallowed Ones, it's up to one Amish girl to save her family, her community, and the boy she loves . . . but what will she be asked to sacrifice in return?, this group has discovered a way to make themselves phosphorescent. Like sunlight, their glowing bodies seem to confer some immunity to the vampires. Alex readily chooses to take the serum, but Katie struggles with what tampering with her core physical self means for her Amish faith and identity. But if the serum is humanity's best hope, it must be made available to other survivors. Alex and Katie find themselves at an impasse when he wants to continue north to rescue what remains of his family, and she wants to go south to bring the serum back to her Amish community. But what lies at the end of their journey is something neither of them expected.