Hamza and Brian learn that the Trojan Horse letter wasn’t the only unsigned letter alleging an extremist operation was afoot in Birmingham. An interview with a couple who lodged complaints against their school starts out cordially, but six hours later, the atmosphere is so tense that not even an offer of tea can smooth things over. And Hamza stops pretending he’s not angry about what he’s hearing. Our newest podcast, “The Preventionist” is out now. Search for it wherever you get your podcasts. To get full access to this and other Serial Productions and New York Times podcasts on Apple Podcasts and Spotify, subscribe at nytimes.com/podcasts. To find out about new shows from Serial Productions, and get a look behind the scenes, sign up for our newsletter at nytimes.com/serialnewsletter. Have a story pitch, a tip, or feedback on our shows? Email us at serialshows@nytimes.com