During an interview with MSNBC's Nicolle Wallace, the Apprentice in Wonderland: How Donald Trump and Mark Burnett Took America Through the Looking Glass author shared a glimpse into one of his many conversations with Trump.

"He slips," Wallace said to Setoodeh. "You talk about the mask coming off moment, when [Trump] told you that he lost."

The award-winning journalist replied, "He does. In one of our conversations we were watching clips of The Apprentice, and I showed him a clip of Geraldo Rivera, who was a contestant. And he got worked up over their falling out and the feud that they had, and he said 'when I lost the election.'

And that was a really revealing moment to me and proved something I'd been thinking about, is Donald Trump is playing a character. He's a reality show character that projects this image that people want to see. And I think truthfully, if we were able to get inside of his head and find the truth, he would admit that he lost the election, because he said it to me."

Watch the video below or at this link.