According to the FBI, there are about 300 serial killers active in the United States. What if these killers have a way to communicate, contact, and even exchange "murder experiences" with each other? What if they work together to commit crimes, or even form a kind of nationwide alliance? What will happen if one of these killers is smart enough to unite all the killers and activate a "murder culture" that everyone follows? What will the United States look like? This thriller crime drama created by Kevin Williamson, the producer of "The Vampire Diaries", is based on these three questions.