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Richard and Caroline reveal their past feelings to each other, but agree they've both "moved on"; Del recruits Annie and Charlie to help him upstage his brother.
Caroline spends Christmas with Del and his family after a snowstorm leaves her parents stranded in Wisconsin; Charlie and his dad share their first holiday together.
Trivia wiz Caroline struggles to overcome her stage fright after she agrees to appear on a live radio quiz program that's broadcast nationally.