Covert action, often called the Third Option, refers to efforts by the US to secretly influence international affairs through propaganda, as well as political, economic, and paramilitary operations. It is a dimly lit world of secret agents, weaponry, foreign election propaganda, and counterfeit foreign currencies-a largely invisible realm of clandestine activities governed by the best of intentions, yet sometimes yielding the worst of results. In short, it's a world that merits the thoughtful attention and judgment of every citizen. Loch Johnson offers a frank assessment of this obscure but vital component of America's foreign policy.