TraxNYC, a store in New York’s diamond district, doubles their business in the wake of a video depicting the store’s owner in a full-on brawl with a rival jeweler. But Sarah Koenig wants to know: At TraxNYC, how much is real and how much is for show? To learn more about upcoming episodes of METRO and get a look behind the scenes, find us on Instagram, TikTok, and Facebook by searching “Serial Productions”. Have a story pitch, a tip, or feedback? Email us at serialshows@nytimes.com (mailto:serialshows@nytimes.com) .