You can listen to “Caliphate” above, or by searching for “Caliphate” wherever you get your podcasts. (If you’re on an Apple device, that’s probably Apple Podcasts. Users of Apple or Android devices can find us on RadioPublic, Stitcher, Spotify or the podcast platform of your choice.)

Each episode will be available to New York Times subscribers a week early, as a way to thank them for their support of this kind of reporting. If you’re a Times subscriber, you can get an early listen to the next episode here. If you’re not, consider becoming one. Either way, sign up to receive weekly dispatches from Rukmini and learn when new episodes are live.

Background reading:

• On five trips to Iraq, Times journalists scoured old Islamic State offices, gathering thousands of files abandoned by the militants.

• The documents that were unearthed reveal extreme brutality and detailed record-keeping.

“The Daily” will be back with a new episode on Friday.

Tune in, and tell us what you think. Email us at caliphate@nytimes.com. Follow or tweet Rukmini at @rcallimachi. And if you’re interested in advertising with “The Daily,” write to us at thedaily-ads@nytimes.com.