Every homicide detective's worst nightmare is to get a note that says "I will kill one body a month unless you stop me..." Detectives Nick Rudd and Duncan Crane of the NYPD got that note one cold day in January and they were now being forced with the impossible task of racing against the clock to stop a deranged serial killer from taking out half of New York. With no real victim pattern, no evidence, and nothing to lead them in a solid direction,...