Hidden among the seemingly peaceful suburbs of America, there lies a bizarre patchwork of unique subcultures and secret societies - extraordinary communities that live on the periphery according to their own set of rules, rituals, and traditions. From renegade Amish sects and New Age cults to centuries-old Gypsy clans, each episode transports viewers into the dark underbelly of a fascinating and foreign world. Deadly Devotion recounts the gripping and unpredictable true stories of everyday people on the search for a sense of belonging in these strange worlds, and end up paying a fatal price.