On the streets of Brooklyn in the 1970s, Veronica Chambers mastered the whirling helixes of a double-dutch jump rope with the same finesse she brought to her schoolwork, her often troubled family life, and the demands of being overachieving and underprivileged. Her mother--a Panamanian immigrant--was too often overwhelmed by the task of raising Veronica and her difficult younger brother on her meager secretary's salary to applaud her daughter's...