What do you know about Pentecostalism? Growing to 200 million people in the last 100 years, it's a spirited and feisty sect. But it's famous for more than its growth -- its fervent prayer, isolationism, and belief in the "gifts of the spirit" make it one of the most controversial -- and cultic -- Christian faiths. In this upcoming short-run documentary, I explore my upbringing in the Pentecostal church and speak with other ex-Pentecostals about why they left. And why they believe it's a cult.