You will not find one dull moment in this documentary about William Colby, the CIA director under Nixon and Ford. Colby was not, however, a man of mystery, a super-spy with a James Bond–like double life. Instead, he was a man of his time (mid-to-late 20th century) and world (Cold War America). He was religious, had a big family, a loving wife, and was a competent soldier and spy. The documentary is told from the perspective of Colby’s son, Carl Colby, who believes his father was different from the other Cold War warriors—he was more sensitive, more caring, more pragmatic, and so on. These noble attributes, the son suggests, cost him his job; he was replaced in 1976 by none other than the first George Bush. Carl Colby also suggests that if the higher-ups had just listened to his father, the Vietnam War might have been avoided. What all of this is saying, and what this great doc comes down to: Fathers are always giants to their sons.