Políptico de Gante
Richard Campbell and Preston Savitz learn that Van Eyck's "Ghent Altarpiece" was removed by the priests of Ghent Cathedral for safekeeping, but their truck was stopped and the panels taken. Eventually, they find and arrest Viktor Stahl, who is hiding as a farmer, when they identify the paintings in his house as masterpieces, at least one stolen from the Rothschild Collection.