ABC promised that onetime “Dawson’s Creek” star Katie Holmes, Tom Cruise's third ex-wife, was interviewed in connection with actress Leah Remini’s “20/20” interview, but Holmes issued a denial Friday. Even though she said she wishes nothing but good for Remini, she will not appear on the ABC special.

Her rep released a statement through Us Weekly about not being part of the exposé on Scientology: "I regret having upset Leah in the past and wish her only the best in the future."

That’s quite different from what ABC News anchor Dan Harris, who conducted the interview with Remini, told Robin Roberts on "Good Morning America" Friday. "You're also going to hear from Katie Holmes, the former wife of Tom Cruise," Harris said. "[And] what she is now saying about Leah."

Like Remini, Holmes, 36, is no longer a Scientologist. But she also hasn’t slammed the Church of Scientology the way Remini has. The former “King of Queens” actress has been outspoken in her disdain for her former religion, which she became involved with when she was 8 years old.

Remini, 45, said being a child in the Church of Scientology gives kids an inflated self-worth. "Because Scientologists view children as spiritual beings, you’re not treated as a kid,” the actress said. “You’re given a lot of responsibility; your ego becomes extremely inflated.”

She also slammed “Mission Impossible” star Tom Cruise, who has an extremely high rank in the church. The actor has not responded to Remini’s interview, but the Church of Scientology issued a statement about her campaign in May. "Given Leah Remini's insatiable desire for attention, it comes as no surprise that for two years she has been incapable of moving on with her life," the group said. "And she remains obsessed with shamelessly exploiting her former religion in a pathetic attempt to get publicity.”

The star’s expected exposé airs Friday at 10 p.m. EDT on ABC.

Follow me on Twitter @mariamzzarella