A family memoir about the author's race to document her father's story as a World War II paratrooper before his mind succumbed to dementia relates how he overcame formidable obstacles and maverick impulses to join an elite special ops unit that was a first collaboration between the American and British Secret Services. "Keggie Carew grew up in the gravitational field of an unorthodox father who lived on his wits and dazzling charm. In her adult life,...