S1 E09 - Chapter Nine: La Grande Illusion
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Riverdale: Every Movie That Inspired The Episode Titles

9. S1 E09 - Chapter Nine: La Grande Illusion
La Grande Illusion (1937) - Class differences between a group of French soldiers are explored when the men are captured as prisoners of war during WWI. On Riverdale, Archie sees how the other half lives after escorting Cheryl to her family's maple party.