Hamza and Brian think the source of the Trojan Horse letter might be hiding in plain sight. After learning about the petty personnel dispute that probably gave rise to the letter, they’re even more bewildered about how it ever could have been taken seriously. To get full access to this show, and to 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