Tom Cruise and Nicole Kidman's kids, Isabella and Connor, step up in the Scientology ranks

Connor and Isabella Cruise. Photo / Instagram

Tom Cruise's children appear to not only be stepping up within the world of Scientology, but actively promoting its cause.

In recent weeks, 28-year-old Isabella Cruise took on a new role as auditor in the religion, with the job of interviewing members to get them to reveal their secrets and confess their shortcomings, the New York Post reports.

Three weeks ago, in a post for a church newsletter, she said: "This IS what I had been searching for. The missing piece. Suddenly everything began to make sense."

Her younger brother, Connor, 26, is reportedly known as a bit of a heartbreaker on the Scientology scene and is said to be dating a rising star of the church, Silvia Zanchi.

Zanchi, 26, works at the Belleair mission in Florida and is said to be a prolific recruiter. According to church literature, Zanchi has already completed preparations to study the church's secretive Operating Thetan levels.

According to Tony Ortega, author of Battlefield Scientology: Exposing L. Ron Hubbard's Dangerous Religion, the Cruises' increased visibility in the church sends "a message to the rank and file that the celebrities are doing their part."

"Going public in this manner adds up to the Cruise family showing support for [Scientology leader] David Miscavige," Ortega told the Post. "Miscavige needs to shore up support for Scientology. The Cruises set an example, which is huge in terms of his holding onto wealthy donors."

Tom Cruise was introduced to the church in the 1980s by his first wife, actress Mimi Rogers, whose father was one of the church's original members.

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Throwback time @beezwell #tbt

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He split with Rogers in 1990 and married Nicole Kidman the same year. The couple adopted Isabella in 1992 and Connor in 1995.

The two divorced in 2001 at which point Kidman returned to Australia while the kids stayed with Cruise in California, where they were raised as Scientologists, Ortega says.

Meanwhile, Cruise's youngest child — 13-year-old Suri - is said to have no exposure to the church after Katie Holmes reportedly pulled her out of Scientology when she and Cruise split in 2012.

There has been speculation that their divorce was tied to Suri reaching the age of 6 as that's typically the "age when kids start being indoctrinated into Scientology," Ortega said.

"[Holmes] saw what the older kids were going through and didn't want that for Suri."