They think something's gone wrong, but in Don't Look Now, for instance, one scene was made by a mistake. It's the scene where Donald Sutherland goes to look for the policeman who's investigating the two women. ↗
Well, I think one of the reasons Chicago became so popular as a filmmaker location is because New York had been used so many times that Chicago, I think, was rediscovered maybe in the late '60s, early '70s for a long time as a new location. ↗