Though many cautionary tales were penned about the toll wreaked upon the rock ‘n’ roll legends of the 1960s, few included the impact such destructive lifestyles had upon their children. One of the gloomiest exceptions was that of Mackenzie Phillips, daughter of Mamas and the Papas founder John Phillips and the teenaged star of the popular sitcom “One Day at a Time” (CBS, 1975-1984). Exposed to her father’s drug habits and witness to all manner of unsavory behavior before she reached the age of 18, Phillips developed her own addiction to cocaine during her tenure on the series, and was dropped