Having left the pack behind, Tilly and Spencer, along with Desmond and his boyfriend, must seek new territory and a new home. With Halloween fast approaching, the certainty that Arakael would return on the night that the veil between worlds is thinnest looms in all of their minds. Tilly struggles with her new lycanthropy, and discovers more about herself and her family than she ever wanted to know. With secrets being revealed and relationships tested, they're going to have to come together to survive their biggest battle yet.