The story of the policeman Frank Serpico The book written by the same Serpico is much better than this drama. Pacino did his best acting in the role of Serpico, a man who always fought against the corruption inside the police of New York city. However, the film was able to show the main connection of corrupted cobs with mafia in New York, the way Serpico was mistreated by his colleagues and the risk he had everyday in his action. It is funny to see when the great jury did not allow Serpico to talk. Probably this was done to protect a bit the already deformed reputation of New York police. In any case, the plot and the messages of the film are beneficial for the health of the Big Apple, a town with too many famous attributes, including a heavy criminality.