An exclusive segment was coming up — an interview with Rosa, a mechanic who ran her own shop out by the river, famous for fixing engines and telling stories that could curl a listener’s spine. Gwen recorded under a tin roof, the air heavy with oil and sunlight, and found in Rosa’s slow speech a rhythm that made the episode pulse. Between takes, they talked about the town’s old summer rituals: midnight swims, rooftop picnics, the fading Fourth of July parade that still drew three generations to the square.