It's the news the Church of Scientology have probably been dreading.
High profile defector Leah Remini, 43, has revealed she's writing a tell-all book about her experiences within the controversial religion.
Speaking at the 15th annual DesignCare event in Malibu, Remini told Us: 'It will include my experiences, everything that's taboo to talk about.'
Paying no heed to the powerful enemies she has made since her split from the institution, she said: 'We stand united, my family and I, and I think that says a lot about who we are, and what we're about.'
The diminutive showed no signs of being bowed by the attacks on her character since she left Scientology as she posed with her friend Holly Robinson Peete.
Talking to People magazine she defended her choice to break with the church after 30 years.
'I believe that people should be able to question things,' she explained.
Meanwhile, Crash director Paul Haggis praised the actress in an open letter to The Hollywood Reporter, saying that she was one of just two high profile names who refused to disconnect from him after his defection in 2009.
'I believe that people should value family, and value friendships, and hold those things sacrosanct.
'That for me, that's what I'm about. It wouldn't matter what it was, simply because no one is going to tell me how I need to think, no one is going to tell me who I can, and cannot, talk to.'
Leah was said to have been ostracised and subjected to intensive interrogation within the religion.
The Church of Scientology said in a statement to MailOnline: 'The Church respects the privacy of parishioners and has no further comment.'
Telling all: Remini is writing her memoirs, and not holding back by all accounts
Former King Of Queens star Leah joined the Church with her mother in the 1970s after relocating to Los Angeles from Brooklyn to pursue her acting dream.
Since her split with the institution prominent church members such as Kirstie Alley have appeared to attack their former friend.
The fallout from Remini's Scientology defection continues to gather momentum and has now enveloped another big name in the drama... Katie Holmes.
Tom Cruise's ex-wife may have left both him and the controversial religion, but Leah's sister, Nicole, has claimed in a widely reported interview that Holmes, now 34, joined 62-year-old Kirstie Alley in writing negative reports about the King of Queens star after Katie's 2006 wedding to Cruise.
According to Radar Online, Nicole, a former Scientologist, claims that both Holmes and Alley wrote ‘knowledge reports’ to the church about 43-year-old Leah’s behaviour. (Church followers are understood to be obliged to submit write-ups on fellow members' transgressions.)
The Church of Scientology strenuously deny any of the sensational allegations brought by Nicole.
Leah, who left the church after 37 years, apparently sparked the chain of events at Cruise and Holmes' Italian wedding when she and non-Scientologist friend Jennifer Lopez tried to change seats so they could be next to one another.
Nicole told former Village Voice editor Tony Ortega, who then relayed it via his blog, The Underground Bunker: 'She wanted to sit with Leah, and so Leah went to make it happen.'
But a Hollywood publicist 'took exception to Leah’s request and complained to Katie Holmes and Tom Cruise that Leah was causing a scene,' Ortega described Nicole as telling him.
'Later, Leah asked other people at the event if she had caused a scene and they said she hadn’t,' Nicole says.
One friend of Nicole's then submitted a report to the church in support of the Brooklyn born star which led to four other people writing to the church about the incident, two of which were allegedly Holmes and Alley.
Nicole says Leah told a Scientologist friend what happened and the friend submitted a report to the church, taking Leah’s side.
'They wrote that Leah was an embarrassment to Scientology,' Nicole said. 'They said she ruined the wedding. All she did was ask to change her seat.'
Nicole has also claimed that Leah’s questioning of why church leader David Miscavige’s wife was not at the wedding and is rarely seen in public also caused the church to question her.