Rampaging serial killers leave carnage in their wake as their next victims fight to stay alive in this horror anthology series. The first season, "The Executioner", centers around Sarah Bennett who, with husband Dylan, moves back to the town of her birth, Waterbury, and into her parents' former home where them were murdered. The second season, "Guilty Party", is centered on a group of former summer camp counselors who return to an isolated campground in order to bury the sins of their past, before being targeted, one by one, by an unknown killer. The third season, "Solstice", centers around a group of neighbors who are targeted by a mysterious killer known as "The Druid" during the summer solstice period, due to their complicity in not saving a murder victim, in the previous year, who later wounded up being killed in front of their apartment complex.

The sleepy Pacific Northwest town of Eureka is hiding a mysterious secret. The government has been relocating the world’s geniuses and their families to this rustic town for years where innovation and chaos have lived hand in hand. U.S. Marshal Jack Carter (Colin Ferguson) stumbles upon this odd town after wrecking his car and becoming stranded there. When the denizens of the town unleash an unknown scientific creation, Carter jumps in to try to restore order and consequently learns of one of the country’s best kept secrets.