No one has ever written the history of the Defense Department's most secret, most powerful and most controversial military science R&D agency. In the first-ever history of the organization, New York Times bestselling author Annie Jacobsen draws on inside sources, exclusive interviews, private documents and declassified memos to paint a picture of DARPA, or "the Pentagon's brain," from its Cold War inception in 1958 to the present.This is the book on DARPA - a compelling narrative about this clandestine intersection of science and the American military and the often frightening results.