One Serpico wasn't good enough so the producers of NIGHTHAWKS gave Stallone Serpico's hair, beard, and sunglasses and Billy Dee Serpico's longshoreman's cap and army jacket. Shrewd. In the course of police work, Pacino and Stallone / Williams scale a tenement via fire escape in order to make a bust.
For those who appreciate the unique physicality that an actor of Pacino's caliber incorporates into every performance, a couple of remarkably similar shots, from CRUISING and SERPICO, show Pacino lazily swaggering down a gritty New York street as only he can.
Music is "I'm A Man" by Keith Emerson and "It's So Easy" by Willy DeVille.