In 1990, two men dressed as police officers rang the night bell at Boston's Isabella Stewart Gardner Museum and walked out with thirteen works of art now valued at more than $500 million. More than three decades later, the frames still hang empty, the reward is still open, and the paintings have never come home. This episode traces the eighty-one-minute robbery, the strange choices the thieves made, and the long investigation into a crime where the stolen objects became too famous to sell and too valuable to forget.