Dean Baquet, the executive editor of The Times, discusses where “Caliphate” failed to meet Times standards. And Mark Mazzetti, an investigative correspondent for The Times, details new reporting that casts significant doubt on the claims of a central figure in the series. Editors' Note: The Times has published an Editors’ Note concluding that episodes featuring a central character in “Caliphate” did not meet our standards for accuracy. Read the full statement.

What does the future hold for the ISIS returnee who confessed to murder? And what does he believe now?

Slavery was enmeshed in the theology of ISIS. Rukmini speaks to an ISIS detainee who challenges her to find the girl he enslaved. She does.

After three years in ISIS captivity, a young Yazidi girl returns to her family. Rukmini is there to witness it.

We found a trove of secret documents after Mosul fell. It led us to the mother of an ISIS official. The last episode of “Caliphate” will publish on Thursday, June 14th. New York Times subscribers can listen to that episode now at nytimes.com/caliphate.

What did ISIS leave behind as their hold on Mosul crumbled?

“Something was off.” Rukmini’s doubt fuels a quest to uncover the truth.

The recruit carried out the killing. Then he questioned everything.

A new recruit proves his worth and gets invited to a secret meeting.

ISIS turns fantasy into reality for a new recruit.

Who is it that ISIS appeals to, and how? Rukmini speaks with a former ISIS member about how and why he joined the fold.

Rukmini describes the reality of being on the terrorism beat and why she brings trash bags with her to the frontlines of the war against ISIS.

The war on terror has cost the U.S. billions and has been fought for nearly 20 years. Rukmini Callimachi, a foreign correspondent for The New York Times, asks, “Who are we really fighting?”