20/20 Promo: James Comey Compares Trump To "A Mob Boss"

If there was any doubt that former FBI Director James Comey's upcoming book, A Higher Loyalty, would be a bestseller, this is all you need to know:

Axios is reporting that Comey has taped an exclusive interview with ABC's George Stephanopoulos, set to air Sunday at 10 p.m. as a "20/20" special.

Sources tell Axios the one-on-one with Comey is "going to shock the president and his team."

In an ABC promo, Stephanopoulos says Comey compared Trump to "a mob boss."

Comey's book, "A Higher Loyalty," is out next Tuesday. He taped the interview Monday at his Washington-area home.

According to the source:

The Comey interview left people in the room stunned — he told George things that he’s never said before.

Some described the experience as surreal. The question will be how to fit it all into a one-hour show.

Comey answered every question.

If anyone wonders if Comey will go there, he goes there.

The 20/20 interview will be Comey's first since being fired almost a year ago.

Here's the promo that aired last night during Trumpers' favorite sitcom, Roseanne.