This film, made at the request of Maria Callas herself, was started in 1973, but wasn't finished until 12 years later. It includes eye-witness accounts by Franco Zeffirelli, Tito Gobbi, Luchino Visconti, Carlo Maria Giulini, Giuseppe Di Stefano and many others who knew her well. It tells a story that was previously unknown, about a great singer who had been brought low by love,...