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Leah Remini is still Scientology's public enemy No. 1.

When the actress left the controversial church in 2013, it sent shock waves throughout the organization and throughout Hollywood. Now, the actress is fully opening up about her decision to leave the religion that she was raised in.

In a preview of her new reality series, "Leah Remini: It's All Relative," Leah sits at a table with others who have fled the religion. None of the other women, though, were as publicly critical of the the church as Leah.

"If you make a stink in the public world, they call you a suppressive person, which means the church has put a stamp on you that says you are bad," she said in an exclusive clip on "They then go to all your family and friends and say you have to disconnect from this suppressive person."

For Leah, the decision to leave really came down to her daughter.

"I decided I didn't want to raise my daughter in the church because from what I've experience and what I saw, the church becomes your everything," she said. "It becomes your mother, your father, your everything. You are dependent on the church."

She continued, "If you're raised in it as a child, you really don't have loyalty to your family."

She even feared for the day that either she or her daughter would leave the Scientology, forcing one of them to sever all ties. There could have been some "pretty hard repercussions" if she stayed a Scientologist, the former "King of Queens" star said. Leah previously said that she lost many longtime friends when she chose to leave two years ago.

The church, meanwhile, says everything is not as it seems and that Leah was on the verge of getting kicked out. It also alleges that she is simply using the organization for publicity.

In a harshly written statement, a the church said, "It comes as no surprise that someone as self-absorbed as Leah Remini with an insatiable craving for attention would exploit her former religion as a publicity stunt in a pathetic attempt to get ratings for her cable show and seem relevant again."

It continued, "She is rewriting history and omits that she was participating in a program to remain a Scientologist by her own choice, as she was on the verge of being expelled for her and her husband's ethical lapses."