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| Al Pacino | Frank Serpico | |
| Tony Roberts | Bob Blair | |
| Jack Kehoe | Tom Keough | |
| Cornelia Sharpe | Leslie | |
| Barbara Eda-Young | Laurie | |
| James Tolkan | Steiger | |
| Lewis J. Stadlen | Berman | |
| M. Emmet Walsh | Gallagher | |
| John Randolph | Chief Sidney Green | |
| Biff McGuire | Capt. McClain | |
| Norman Ornellas | Rubello | 
| Director | 
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| Producer | Martin Bregman Dino De Laurentiis | ||
| Writer | Norman Wexler Peter Maas | ||
| Cinematography | Arthur J. Ornitz | ||
| Musician | Mikis Theodorakis | 
|  | The true story about an honest New York cop who blew the whistle on rampant corruption in the force only to have his comrades turn against him. | 
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