In December 1974, “The Godfather, Part II” premiered in New York City. Following the unlikely success and unexpected acclaim that his 1972 adaptation of Mario Puzo’s bestselling novel received, Francis Ford Coppola was granted almost unlimited discretion to realise his cinematic vision for the sequel — and he used that discretion to greatest possible effect.

In fact, “The Godfather” and “The Godfather, Part II” are rare instances of films that far outstrip, in both its narrative depth and its aesthetic form, the source material on which they are based.

At the heart of the first two “Godfather” films is a stark contrast. Vito is virtuous within a cinematic universe in which legality and morality are not synonymous: the fact that his assassination of the tyrannical Don Fanucci is celebrated, that his “favours” are beneficent, that he is attentive to his wife and children — all suggest a kind of moral goodness. Whereas Michael, having begun as the most virtuous of Don Corleone’s sons, falls deeper than the others could have gone.

Having begun alone, somewhat removed from the family, Michael ends the film utterly, existentially, morally, isolated.