I suppose you could list one of the settings in the story as New York's Wall Street, because that is where the main character, Kit Deleeuw, first had a job that was known to his readers. However, he left that job. He moved himself to New Jersey and set himself up as a private investigator. That's where the story takes place. His office is in Rochanbeau, an affluent New Jersey suburb. His physical office is in the American Way Mall. Obviously the entire story does not take place in that mall and office, but the main setting of the story is locations in and around New Jersey and its suburbs. The time frame is modern, present day.