Comey's firing by Trump has brought a host of issues for the president since previous year.
'How odd is it for you to sit here and compare the president to a mob boss, ' Stephanopoulos asks, ' against a soundtrack of tense violin music.
Although the preview only features Stephanopoulos' line of questioning, of which Comey apparently answered each and every one, the implications alone are damning.
The Beast writes that Kelly had meant to quit in protest over Comey's departure, but according to sources who have read the book, Comey writes that he urged Kelly to stay on, saying "this president" needs people of integrity inside the administration. Stephanopoulos asked Comey in a promo clip of the interview.
Comey's memoir is likely to cause an uproar with the president and his supporters and could further hurt Trump's relationship with his chief of staff - reports and rumors have for weeks indicated Trump could be looking to get rid of Kelly, and that Kelly's influence is waning inside the White House.
Last month, Trump also lashed out at Comey, accusing him of lying under oath.
Republicans will highlight Democratic criticism of Comey over his handling of the investigation into Hillary Clinton's email.
The former Director spoke of things that he had never said before, the source told Axios news. Kelly "said he didn't want to work for dishonorable people", referring specifically to President Donald Trump, who appeared to be upset at the FBI's persistent investigation into his campaign's possible collusion with Russian officials...
The interview is set to air on Sunday at 10 p.m.as a special episode of ABC's "20/20".