The new movie BlacKkKlansman is careful to let you know very early on that, yes, its story is a true one, with a few embellishments for film. And it likely does so because said story — a black man goes undercover and becomes a trusted confidant of people in the Ku Klux Klan, including David Duke himself — would be written off as preposterous if it occurred in a fictional context.

But, no, that man really existed. His name was Ron Stallworth, and as an officer with the Colorado Springs Police Department, he really did talk on the phone with local Klansmen and with Duke. And with the help of his white partner, he was able to infiltrate the organization and work to bring some of its local members down. It’s a great story that is made all the better by virtue of being true, and in both Stallworth’s book about the experience and in Lee’s film, the story becomes a way to look at both the ridiculousness and the poisonousness of American racism.

Stallworth joins Todd this week to talk about seeing his life become a film, being a black police officer, and what was most changed for the movie.

Then: stick around for a chat with writer-director Desiree Akhavan on her new film The Miseducation of Cameron Post, a beautiful coming-of-age story set at a fundamentalist Christian-run gay conversion therapy retreat.