The Wall of Spies provides detailed accounts of more than 135 spies who betrayed America from the Revolutionary War to the 21st Century. While not a full accounting of every traitor to America during this period, the wall provides key insights into their motivations and tradecraft. As we make way for the digital version of the Wall of Spies here on Intelligence.gov, we plan to expand the exhibit further, to include stories beyond what could be accommodated by the physical installation. Here's a look "inside" the exhibit.