Like a family of raccoons, ghosts skulk quietly through dark places and are nearly impossible to stop from rummaging through your trash. Catch them in the act with this Groupon. $12 for a Ghosts of New York Tour for One (Up to $25 Value) During 90-minute tours, groups of 20â€“25 follow guides who share supernatural stories, historical facts, and New York trivia. Fifteen different tours embark from locations around the city, including visits to sites connected to Edgar Allen Poe, Washington Irving, and Harry Houdini. Click here for the tour schedule.