The United States government, its military, and intelligence agencies considered Fidel Castro's Cuban regime a preeminent threat. The Communist stronghold was located at the front lines of the Cold War and positioned far too close for the taste of American officials. Seeking to overthrow Castro led some American leaders to ignore potential blowback and engage unreliable and criminal groups to see their desires fulfilled. Hundreds of Cuban exiles of interest to the United States seemed committed to the goal of deposing Castro; among them were the Diaz Lanz brothers, Pedro and Marcos...