Jack Kerouac called Doctor Sax, the enigmatic figure who haunted his boyhood imagination, 'my ghost, personal angel, private shadow, secret lover'. In this extraordinary autobiographical account of growing up in Lowell, Massachussetts, told through his fictional alter ego Jack Duluoz, he mingles real people and events with fantastical figures to capture the accents, scents, sights and texture of his childhood: playing among the river weeds and railroad tracks, going to church, witnessing life and death on the street corners. Written when he was staying with William Burroughs in Mexico in 1952, Doctor Sax was Kerouac's favourite of all his books: a dark, vivid and magical evocation of a boy's vibrant inner life.