The Roman taxi driver Pietro Marchetti finds himself to witness a mafia crime. Having to testify at the trial, he is checked by the police, especially when he has to go to the United States to attend the graduation of his son Francesco.
| Actor | Role |
|---|---|
 Alberto SordiPietro Marchetti | Pietro Marchetti |
 Anna LonghiTeresa Marchetti | Teresa Marchetti |
 Dom DeLuiseCapitano T. Favretto | Capitano T. Favretto |
 George Gaynesl'ammiraglio | l'ammiraglio |
 Buffy DeeDon Vincenzo, un mafioso | Don Vincenzo, un mafioso |
 Bruno CorazzariDottore | Dottore |
| SSasha D'ArcMicheal il buono, il killer | Micheal il buono, il killer |
 Egidio TermineFrancesco Marchetti | Francesco Marchetti |
 Antonino IuorioPablo, il tassista | Pablo, il tassista |
| MMario Viggianoil malavitoso anziano | il malavitoso anziano |
| MMichelangelo PaceNot listed | Not listed |
| TTony DreyspoolNot listed | Not listed |