Tom Cruise is one of the most famous members of the Church of Scientology, purportedly serving as its ambassador of some sort.

Though it was previously rumored that the actor's failed marriages with Nicole Kidman and Katie Holmes may be related to Scientology, it was only recently that a former member of the church has revealed what happened between closed doors.

Actress and former Scientologist Leah Remini dished out the dirt on how estranged Nicole Kidman was shunned by Tom Cruise and adopted daughter Bella Cruise ever since the "Moulin Rouge" actress has become what Scientology calls Suppressive Person or SP.

Leah Remini just released a tell-all book titled "Our mom is a f*****g SP."

"As far back as Bella's father Tom Cruise's 2006 wedding to Katie Holmes, Remini explained she was shocked by the then teen's attitude to her parent," Daily Mail reported.

"After the lavish Cruise-Holmes wedding, Remini shared a ride to the airport with Cruise, Bella and her brother Connor. She claims she asked the pair if they had seen their mother recently. 'Not if I have a choice,' Bella said."

Some speculate that Scientology could be taking a toll in Tom Cruise's relationships and family life.

It could be recalled that Scientology was also an issue that Katie Holmes allegedly put on the table when she filed for divorce from Tom Cruise.

"During a deposition in his court battle against a pair of magazines, Tom Cruise admitted that ex-wife Katie Holmes filed for divorce 'to protect Suri from Scientology,' according to court documents," ABC News reported in 2013.

There are also previous reports that Tom Cruise has purportedly been realizing how Scientology has been affecting his relationship with his daughter with Katie Holmes, Suri.

"Rumor has it that church leaders don't want Cruise seen publicly with his daughter because she's not being raised in the church," Celeb Dirty Laundry previously reported.