Rage and ruin
(Book)

As tensions rise, they must stay close together and patrol the DC streets at night, seeking signs of the Harbinger, an entity that is killing Wardens and demons with no seeming rhyme or reason. Forbidden to be with each other, Zayne and Trinity fight their feelings and turn to unusual sources for help -- the demon Roth and his cohorts. But as deaths pile up and they uncover a sinister plot involving the local high school and endangering someone dear to Zayne, Trin realizes she is being led ... herded ... played for some unknown end. As anger builds and feelings spiral out of control, it becomes clear that rage may be the ruin of them all.