Lines from John Lennon's ballad, "Dear Prudence," are easily recognizable by anyone who enjoys the Beatles' music. But who was Prudence? Prudence Farrow Bruns, a daughter of the prominent Farrow family that includes sister Mia Farrow, finally sets the story straight. She touches on her own famous family's heartaches and triumphs, even as she voices the experiences of an entire generation through a single iconic song.