Leonard and Penny discover Mr. Larry Fowler in Sheldon and Amy's apartment hiding from his wife.
Raj instigates a Twitter feud with Neil deGrasse Tyson but is scared off when confronted over the phone.
In July 2018 at San Diego Comic Con, it was confirmed that Kathy Bates and Teller would reprise their roles as Amy's parents.
[3] The episode attracted a total of 2,262,000 viewers within seven-days of its British premiere, making it the most watched programme on E4 for the week.
[4] Caroline Preece of Den of Geek complimented the guest appearance of Neil Degrasse Tyson.