Megyn Kelly's show will not be a partisan.
Kelly is a quick-witted presenter, though despite being given a huge platform, the 31-year-old doesn't intend to become a partisan broadcaster.
"If you watch O'Reilly, you hear a lot about what Bill O'Reilly thinks" she told the Associated Press, "Sean Hannity, same thing. But you're not going to hear what I think."
The Kelly File is the centrepiece of Fox's first prime-time overhaul since 2002. Hannity has moved back an hour to 10pm to make room for Kelly at 9pm. Greta Van Susteren moves to 7pm and Shepard Smith makes appearances as a news anchor throughout the evening.
Kelly cut short her maternity leave to ensure The Kelly File could start on October 17, the 17th anniversary of the Fox News launch.
"I've never wanted to be an opinion host [...] I don't think I'd be very successful anyway. I'm not an ideologue, and I think you have to be successful in a prime-time opinion-based show. I think I'm too moderate and reasonable," she explained.
"What Megyn has done for us is create a new style of hosting and a new style of doing a show," said Bill Shine, Fox's executive vice president for programming, "I think she's fair, she's nice. But I think if you're going to try to BS her...if she smells it and she catches it, she's going to call you on it."