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The BAU investigates several murders in the Pittsburgh area and the probe reveals that the crimes were likely committed by a pair of killers working as a team. Meanwhile, Garcia and Morgan share their Valentine's Day plans for their significant others.
Beverly forbids Adam to see the R-rated movie "Porky's," so Murray encourages his son to break the rules. But Adam's rule-breaking doesn't stop there. Meanwhile, Barry employs the music of Lionel Ritchie in an effort to impress Lainey on Valentine's Day.