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.