Patrick Radden Keefe has reported on the Sackler family and their control of Purdue Pharma, the maker of OxyContin. Among the sources for his article “Empire of Pain” was a whistle-blower named Steven May, a former sales rep who joined Purdue during the heyday of OxyContin. In an interview for the New Yorker Radio Hour, May details how the company flooded the market with a powerful painkiller that it deceptively touted as being nearly as safe as Tylenol. Plus, two beloved cartoonists—Roz Chast and Liana Finck—talk shop.