The Conjugal Conjecture

Sheldon and Leonard fear that Mary slept with Alfred the previous night, though they swear nothing happened.

Howard is contacted by Colonel Richard Williams of the Air Force Research Laboratory, who scares both him and Raj.

[3] Jesse Schedeen of IGN rated the episode 7.3, complimenting the family drama but criticized the large number of characters.

[4] Caroline Preece of Den of Geek complimented the casting of Katey Sagal as Penny's mother and Amy's harp performance.

However, Preece criticized the repetition of this episode compared to the premiere of the last season, robbing "Leonard and Penny's wedding of much of its emotion".