After developing enhanced physical abilities, sixteen-year-old Conor Ferguson does what any teenager would do. He prowls the streets at night fighting crime.Salt Lake City isn't exactly a hotbed for crime, though, so Conor's concern grows when he notices a sharp upturn in muggings and assaults. To make things worst, the perpetrators all seem to be teens around his age.As the nighttime mayhem and havoc spills over to broad daylight, overwhelming the police and plunging residents into panic, the National Guard moves in to quarantine the city. Conor isn't content to sit back and let the city tear itself down from the inside out, but things get personal when his family goes missing.With the help of his friends, Nathen and Carina, Conor must fight increasingly violent and mutating teens to save his family and the city, but can he fight the demons rising up in him?Subject 624 twists up the superhero genre by blending in doses of horror, science, and humor, creating a unique and wild ride for readers.