The Puzzler Returns, Part Two: A Field Trip to the CIA

True story: in the heart of the CIA headquarters at Langley, Virginia, there's a puzzle no one has solved. In the second part of this special two-part episode, Ben, Noel and Max join up with returning guest A.J. Jacobs to learn more about the enigmatic sculpture known as Kryptos. See omnystudio.com/listener for privacy information.