In 1899, Isabella Stewart Gardner purchased a strip of marshland to house the Isabella Stewart Gardner Museum in Boston. Ninety-one years later, the Gardner hosted the most infamously expensive museum heist ever—$500 million worth of art including a Rembrandt seascape, Degas sketches, a Vermeer, and ancient Chinese pottery was stolen over St. Patrick’s Day weekend in 1990. Despite a Netflix documentary and substantial increases of reward money, the trail remains frigid. To this day, the museum has empty spaces where the art once was, “placeholders” representing the hope that the paintings will return.