Hollywood-handsome Daniel B. Brewster had it all: inherited wealth, stellar education, combat Marine, prestigious horse farm, gorgeous and talented wife, and two young sons -- even a seat in the United States Senate. He was called "the Golden Boy of Maryland Politics." In 1964, as a stand-in for Lyndon Johnson in Maryland's Democratic Presidential Primary, Brewster defeated the segregationist George C. Wallace, a victory that was credited with clearing...