Concrete Jungle: Predator Concrete Jungle (Pocketbook)

From the Publisher: Summer in New York City, where the violent crime rate rises with the temperature. At the height of the heat, NYPD detectives Rasche and Shafer encounter the most brutal homicides they've ever seen. But a close encounter with one of the murderers and a warning from the government leads Shaefer to suspect an alien influence and a government cover-up.