Stephen Kinzer's book, 'Poisoner in Chief,' exposes how CIA scientist Sidney Gottlieb worked in the 1950s and early '60s to develop mind control drugs and deadly toxins that could be used against enemies of the U.S. government. Gottlieb believed the key to mind control was LSD, and is credited with bringing the drug to the U.S. He also experimented on unwitting people in prisons and detention centers in Japan, Germany, and the Philippines. (Originally broadcast Sept. 2019) Also, Justin Chang reviews, 'Small Axe,' Steve McQueen's new collection of five films set in London's West Indian community.