In 1962, Alfred Hitchcock and a 30-year-old François Truffaut sequestered themselves in a windowless Hollywood office for a weeklong conversation. The result: the seminal book "Hitchcock/Truffaut," published a half century ago, dissecting every film Hitchcock had made until then, illuminating his masterful techniques, making the case for the popular director as an artist, and influencing generations of filmmakers.