context: In New York City's Spanish Harlem, police detectives Dan Madigan and Rocco Bonaro break into a sleazy apartment and arrest Barney Benesch, a hoodlum wanted for questioning by a Brooklyn precinct. Momentarily distracted by the suspect's nude girl friend, the two detectives are outwitted by Benesch, who escapes with their guns.
  When it is discovered that Benesch was wanted for homicide, Madigan and Bonaro are reprimanded by Police Commissioner Anthony X. Russell. Aside from this new problem, Russell is troubled by other matters: his married mistress, Tricia Bentley, has decided to end their relationship; a black minister, Dr. Taylor, is claiming that his teenaged son was subjected to brutality by racist policemen; and proof has been established that Russell's longtime friend and associate, Chief Inspector Kane, has accepted a bribe to protect a hangout for prostitutes.
  Irritated by the fact that Madigan and Bonaro broke the rules by working for another precinct, Russell gives the two men 72 hours to arrest Benesch. Despite the deadline, Madigan tries to spend some time with his wife, Julia, who is socially and sexually frustrated as a result of her husband's dangerous and time-consuming job, though unknown to her he has a mistress on the side, Jonesy.
  The commissioner confronts Kane with the bribe evidence. The inspector was trying to help his son out of a jam. He offers to turn in his badge but resents Russell's outrage at how he could have done such a thing, asking the commissioner what he would know about being a father.
  Benesch shoots two policemen with Madigan's gun. The detectives finally get a lead through bookie Midget Castiglione, who puts them in touch with Hughie, one of Benesch's pimps. Tracing the fugitive to a Spanish Harlem apartment, Madigan and Bonaro bring in a police cordon and order the killer to surrender. When he refuses, the two detectives rush the building and break down the door. In the exchange of gunfire, Madigan is fatally wounded before Bonaro can kill Benesch.
  Russell tries to comfort Julia, but she accuses him of being a heartless administrator. As the commissioner leaves with Chief Inspector Kane, he is asked about Dr. Taylor's situation and other pressing matters at hand. Russell tells him that these are things they can address tomorrow.
question: where is "midget" castiglione cornered?
answer: Spanish Harlem apartment