Leah Remini Reportedly Penning Tell-All Memoir

Actress says memoir will include "Everything that's taboo to talk about."
3:00 | 08/05/13

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Transcript for Leah Remini Reportedly Penning Tell-All Memoir
Reporter: Leah remini made headlines when she quit the church of scientology. Now a new tell-all memoir these reportedly writing could make even more news. "Us weekly" says the actress told them "it will include my experiences everything that is taboo to talk about." Joining the church at age 7, briefly served as a member of the elite religious order known at sea org and moved amongst scientology's famous members. This book is huge. I think every publisher will be interested in bidding for it. I think that this would be one of the most sought off celebrity memoirs of the last few years. Reporter: Not since the oscar winning screenwriter paul hag get had the church had to face such a prominent member quitting and becoming openly critical. Haggis praised remini writing the stakes for her were so much higher than for me. Her decision to leave was so much braver. In a statement to abc news, the church called haggis a stat suss obsessed screenwriter who is exploiting his tenuous connection with scientology to grab headlines. Her sister, a former scientologist says leah's relationship with the church began to sour in 2006 at the wedding of tom cruz and katie holmes where leah asked david miscavige where his wife wife. His wife hasn't been seen publicly in many years. In a radio interview her sister said she was rebuked for asking. She was totally shocked. She did not at all expect that type of response and then it just kind of escalated from there. Reporter: The church has publicly denied the story about remini confronting miscavige. They say mrs. Miscavige continues her work in the church as she always as. As for leah remini's upcoming book, the chump has no comment, for "good morning america," dan harris, abc news, new york.

This transcript has been automatically generated and may not be 100% accurate.

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