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Penny opens the door to let her mother-in law, Beverly (Christine Baranski), into the apartment.
The Conjugal Conjecture - Season 10, Episode 1
Aired September 19, 2016.
On the day of Leonard and Penny's second wedding ceremony, there's an awkward morning after for Sheldon and Leonard as they fret about how Mary and Alfred returned to their hotel together. Meanwhile, Penny's family comes to town for the wedding, but it's a stressful time for Penny's mother, Susan, who is worried about how her family will be perceived because of her son Randall's criminal history.