Leah Remini will detail her experiences with the Church of Scientology in a deposition for a lawsuit against the organization, RadarOnline said.
"Who knows what may come up," Ray Jeffrey, lead counsel for the plaintiffs, told the celebrity news website.
Remini, an actress who left the church during the summer after more than 20 years, is to give her deposition Oct. 15 while she is rehearsing for "Dancing with the Stars."
A hearing in the case is to be held Oct. 18.
Remini said at the time she left the church she did so because Scientology officials were controlling and intimidating towards its members.