Leah Remini said that "being critical of Tom Cruise is being critical of Scientology itself," in that one is looked at as "evil" by other churchgoers.
The King of Queens star, 45, opens up about her former 30-year tenure with the church in an Oct. 30 chat with 20/20's Dan Harris, complete with new revelations, including the one about the organization's most famous member.
The star of the TLC reality show It's All Relative: Leah Remini said that over time, church members will "start to lose touch with the real world," buoyed by an "Us against them" mentality.
"The decision to leave is you are giving up everything you have ever known," she said, "and everything you have worked for your whole life.
"I feel that people need to understand this has been my whole life — I want them to understand how it happens."
Remini has been in a series of nasty tangles with the church since her 2013 departure; the church has continued to uphold the same stance on its former member, telling ABC News, "It comes as no surprise that someone as self-absorbed as Leah Remini continues to rewrite history and exploit her former religion in a pathetic attempt to get ratings."
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Remini told Good Morning America that she was "hurt" by the church's comments, but stands true to the events she's portrayed on her reality show, as the church was a huge part of her life for three decades, and everything shown on the series is authentic to her life.
It's All Relative: Leah Remini airs on TLC Wednesdays at 9/8c.