There are days when Aiden wants nothing more than to leave Tristan to suffer in the messes he's made. They've been through a lot, he, Tristan, and Callie, and he loves them, but Tristan still drives him to thoughts of murder. Until Tristan goes off on a research trip, and a few days later the magic in Aiden's tattoo stops glowing-meaning that in all likelihood Tristan is dead. Clinging to the hope he's wrong, Aiden and Callie go looking for him, and wind up in a town where a series of suicides aren't exactly what they seem, and only the beginning of their troubles...