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David Letterman has been planning to return to TV but it looks like he's working on something big.

The ex TV host is working on a six episode Netflix talk show series that has been kept under wraps so far. While there may have been rumors of Barack Obama being guest number 1, TMZ found out about guest number 2.

Celebrity news website TMZ spotted Malala Yousafzai stepping out of David Letterman's recording studio on Monday. Upon being asked how the show went she said "It was great."

Rumoured guests, John Krasinski and Emily Blunt, were also seen leaving the studio, holding a copy of Malala's children's book Malala's Magical Pen. Malala's gift for their kids, perhaps?

David Letterman will be returning to the talk show world on Netflix, working on “in-depth conversations with extraordinary people, and in-the-field segments expressing his curiosity and humor.”