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.

CLASSIC: Prohibition, Prescriptions and the Rise of 'Medicinal' Booze
31:41

Fort Sauerkraut: North Dakota’s Strange, Ill-Planned Origin Story
38:02

The Bizarre Tale of the 1909 Catnip Riot
35:52