Philadelphia became a battleground for spies as George Washington's Patriot army in nearby Valley Forge struggled to survive the winter of 1776-77. In the centuries that followed ― through the Civil War, the rise of fascism and communism in the twentieth century, and today's fight against terrorism ― the city has been home to international intrigue and some of America's most celebrated spies. "Spy Sites of Philadelphia" takes readers inside this shadowy world to reveal the places and people of Philadelphia's hidden history. These fascinating entries portray details of stolen secrets, clandestine meetings, and covert communications through every era of American history. Along the way, readers will meet both heroes and villains whose daring deceptions helped shape the nation.

Robert Wallace is the former director of the Central Intelligence Agency's Office of Technical Service, founder of the Artemus Consulting Group, and contributor to the CIA's Center for the Study of Intelligence. He has coauthored numerous books with H. Keith Melton, including "Spy Sites of New York City" and "Spy Sites of Washington, DC."

Description courtesy of Georgetown University Press.