This revealing biography of the man known for taking on J. Edgar Hoover provides an in-depth portrayal of one of the most vocal civil liberties crusaders of the 20th century. Made famous by his investigations of privacy violations into the House Un-American Activities Committee and by his subsequent downfall at the hands of J. Edgar Hoover, Neil Gallagher's fight to preserve the right to privacy brought him to the forefront of one of the most crucial debates in national politics. Gathered from primary source interviews with Gallagher himself, this book reveals his side of the story, as well as previously unpublished information on Hoover's alleged role in the Kennedy, Johnson, and Nixon presidencies and information on the assassinations of Martin Luther King, Jr., and John F. Kennedy. With implications for the current debate on balancing national security with the right to privacy, Gallagher's biography offers timely witness to the ongoing struggle to preserve America's civil liberties.