Makenna Fraser and Ian Byrne make up Supernatural Protection & Investigations, aka SPI. For anyone hearing things go bump in the night SPI will battle the monsters and keep clients safe. But some supernatural baddies are just too big to contain, even for them. A sickle-wielding serial killer has been prowling NYC's subway tunnels. The fiend in question, a descendant of Grendel, shares his ancestor's hatred of parties, revelry and drunkards. And with New Year's Eve in Times Square two days away they need to find him quickly before he ruins the party of the year.