Tune in tonight at 9p ET for a Kelly File special as Megyn sits down for an emotional interview with Jessa and Jill Duggar.

Megyn Kelly joined "America's Newsroom" to discuss her upcoming exclusive interview with Jessa and Jill Duggar. 

It was revealed in recent weeks that the girls were the victims of molestation at the hands of their older brother, Josh Duggar, when he was a teen. 

Earlier this week, Megyn sat down with Jim Bob and Michelle Duggar after a tabloid report rocked the family and led to TLC removing "19 Kids and Counting" from the air.

Megyn said by phone this morning that the sit-down with the Duggar girls is riveting. 

"The daughters are by far the most powerful piece of this story. The parents told a compelling story of their own and it's caused all sorts of reaction from both sides. But the daughters are the interview to see," she said.

Megyn called 22-year-old Jessa and 24-year-old Jill smart, articulate, beautiful and passionate about their message. 

"They need to be heard. They have a lot that they want to share about this story," she added. 

The girls were 10 and 12 when the abuse occurred, but they say in tonight's interview that critics have gone "so overboard" by calling their brother a "rapist" and a "pedophile."

"I mean, people get mad at me for saying that, but I'm like, I can say this, I was one of the victims," Jessa said.

Watch Megyn's discussion with Bill Hemmer above.

(See a preview of tonight's exclusive interview, here.)

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