Elyse and Wes investigate whether they have found rock's Holy Grail, the long-lost electric Fender Stratocaster Bob Dylan plugged in at the '65 Newport Folk Festival, changing rock 'n' roll forever. Tukufu tracks down some autographs allegedly signed for two brothers in Miami Beach during the Beatles' legendary 1964 "British Invasion" tour of the United States. Gwendolyn investigates a $5 thrift store find and unearths a little-known artistic side of musical iconoclast Frank Zappa.