Last night Serial's Sarah Koenig was on The Colbert Report—both will end next Thursday, incidentally—and the two discussed the basics of the the popular podcast. During the interview, Colbert, half jokingly, touches on something that many have criticized Koenig for: "That's one of the things that bothers me... from week to week, you might change your opinion about who you think did this."

Koenig says she's still reporting, and wouldn't give up any details she has yet for next week's finale... but if you have a high NFC, prepare to be disappointed.