In one scene the Empire State Building is shown under construction in the background. Yet the film is set in the 1950's and the Empire State Building was completed in the 1930's.
After Martin leaves Ambrose's apartment he flee's out to the street. The backdrop is of NYC however it is clearly a picture from the 1950's . The image shows the Chrysler Building behind an under-construction Empire State Building. The film takes place many years after the empire state building was fully constructed.