The former “King of Queens” star, who publicly severed ties with the Church in 2013, is the most high-profile celebrity to leave Scientology and go public with her criticisms. She spoke with “20/20” about her new memoir, “Troublemaker: Surviving Hollywood and Scientology,” and why she is no longer a member of the Church she served for 30 years.

“I know what my former Church-- how they deal with people who tell their story,” Remini told “20/20.” “And so I wanted to be the one to say it.”