The Procreation Calculation

The Procreation Calculation" is the third episode of the twelfth season of the sitcom The Big Bang Theory. The episode will air on October 4, 2018.

Summary
The Wolowitzes' life gets complicated when Stuart starts bringing his new girlfriend home. Also, Penny and Leonard talk about starting a family while Koothrappali explores an arranged marriage.

Extended Plot
Stuart makes trouble with Howard and Bernadette as he brings home his girlfriend Denise.

Credits

 * Guest starring:
 * Kevin Sussman as Stuart Bloom
 * Keith Carradine as Wyatt
 * Lauren Lapkus as Denise
 * Rati Gupta as Anu
 * Matt Knudsen as Waiter
 * Teleplay: Steve Holland, Maria Ferrari & Anthony Del Broccolo
 * Story: Chuck Lorre, Tara Hernandez & Adam Faberman

Critics
To be entered.

Trivia

 * Anu will be the girl that Raj's father will arrange for him to date or marry.
 * Penny seems to consider the idea of not having children.
 * Wyatt returns in this episode, his last appearance having been "The Conjugal Conjecture".
 * The possible reason why Raj is going along with this marriage arrangement is because all of his dates don't last long due to his personality.

Quotes

 * Penny: What if we don't have kids?