你是說Mario Puso 寫的劇本(小說)嗎？
那可多著呢！貼一下imdb的資料：
Writer - filmography
(1990s) (1980s) (1970s)

1."Last Don II, The" (1998) (mini) TV Series
2."Last Don, The" (1997) (mini) TV Series (novel)
3.Godfather Trilogy: 1901-1980, The (1992) (V)
4.Christopher Columbus: The Discovery (1992) (screenplay) (story)
5.Godfather: Part III, The (1990) (written by)
6."Fortunate Pilgrim, The" (1988) (mini) TV Series
7.Sicilian, The (1987) (novel)
8.Cotton Club, The (1984) (story)
9.Time to Die, A (1982) (story)
10.Superman II (1980) (screenplay) (story)
11.Superman (1978) (story)
12.Godfather: Part II, The (1974) (also novel)
13.Earthquake (1974)
14.Godfather, The (1972) (also novel)

2.是迷你影集，台灣有出video， 也有中文翻譯本(最後的教父)，拍的還不錯；
你聽說的第四集大摡是這一部，不過教父向來就只有三部曲，沒聽說有第四集的…
BEE網友說的那一部應是"Sicilian, The "吧？
意外的是Superman也是Mario Puzo寫的，不過他也掛了，教父應該不會有第四集了…