Lewis, 42, is known only by his surname. A high school teacher and part-time jazz saxophonist, he lives a comfortable, well-ordered traditional life on Telegraph Hill, San Francisco in the heady days of the 1970s. With his liberated wife 32-years old Helen, feature writer on a local newspaper, their comfortable existence in the professions, vacations and outings to restaurants and clubs could not be more idyllic: Until they meet a sixteen year-old musically and intellectually-gifted prodigy, a student of Lewis with a background different to most. Raised in ghettos, Gary Bridger did not study...