This week, Ben, Noel and Max welcome special guest, the legendary author AJ Jacobs, to explore the world's strangest historical puzzle crazes. In part one of this two-part series, AJ regales the gang with the moral panic surrounding early crosswords, armchair treasure hunts and much more. Spoiler: you can hear Ben and Noel on AJ's own show, The Puzzler. See omnystudio.com/listener for privacy information.