As a religious deconstruction and religious trauma counselor, I have worked with many people who were in the process of escaping a cult or high-control toxic religious group. According to current research there are over 10,000 cults operating in the United States.
What follows are 5 articles worth reading to understand the dynamics of cults and high-control toxic religious groups:
The making of Vanguard: The story of how NXIVM's Keith Raniere went from gifted child to self-help guru to accused sex-cult leader