The Negotiator

The Negotiator is a 1998 American action thriller film about two hostage negotiators, directed by F. Gary Gray, and starring Samuel L. Jackson and Kevin Spacey.

Things only get worse for Danny when Internal Affairs investigator Terence Niebaum J. T. Walsh, whom Nates informant suspected of involvement in the embezzlement, is assigned to investigate the murder. Niebaum discovers that Nate was killed with a gun from a case Danny had worked. He and other investigators search Dannys house the following morning and claim to have found papers for an offshore bank account with a deposit equal to one of the amounts of money embezzled. Danny is made to surrender his gun and badge and hardly anyone believes his protests of innocence. Facing the possibility of serious charges within a day, Danny storms into Niebaums office and questions Niebaum about any involvement with the fund and who set him up. When Niebaum refuses to answer, Danny takes Niebaum, his administrative assistant Maggie Siobhan Fallon, police commander Grant Frost Ron Rifkin, and twobit con man Rudy Timmons Paul Giamatti as hostages.With the building evacuated and placed under siege by police including his own unit and the FBI, Danny issues his conditions, which include finding Nates informant and summoning police Lt. Chris Sabian Kevin Spacey, another top negotiator. Danny wants Sabian because he is from another side of the city and therefore unconnected to the pension fund matter, has a reputation for negotiating as long as possible before using force, and should be one of the few people Danny can trust. Despite temporarily putting Sabian in charge after an attempted raid on Danny goes poorly, the police doubt Sabians methods. ........

Source: Wikipedia