The detectives of the 87th Precinct are confronted with a call -- obviously a crank call -- that threatens the murder of the city's parks commissioner unless a ransom of $5,000 is paid. The deadline passes, and the parks commissioner is shot in the head as he leaves a concert. Another anonymous warning follows, then the deputy mayor gets blown up in his Cadillac. The young, charismatic, Kennedyesque mayor is next on the list of what can only be called a serial assassin. It is up to the weary, hardworking detectives of the 87th Precinct to find the shrewd murderer before he can strike again.