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Season 12 Episodes

Episodes

The Conjugal Configuration

1. The Conjugal Configuration

20 min
9/24/2018

Sheldon and Amy's honeymoon runs aground in New York. Penny and Leonard discover they are uncomfortably similar to Amy's parents. Raj insults physicist Neil deGrasse Tyson and starts a Twitter war.

S12 E1
The Wedding Gift Wormhole

2. The Wedding Gift Wormhole

21 min
9/27/2018

Sheldon and Amy drive themselves crazy trying to figure out what 'perfect gift' Leonard and Penny gave them for their wedding. Raj decides he wants to settle down and asks his father to arrange a marriage for him.

S12 E2
The Procreation Calculation

3. The Procreation Calculation

20 min
10/4/2018

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

S12 E3
The Tam Turbulence

4. The Tam Turbulence

19 min
10/11/2018

When Sheldon won't tell anyone why he's never mentioned his childhood best friend, Leonard takes matters into his own hands. Bernadette and Penny take out Raj’s fiancée for dinner to get the skinny on her.

S12 E4
The Planetarium Collision

5. The Planetarium Collision

19 min
10/18/2018

When Amy doesn’t have time to work on super-asymmetry, Sheldon goes to great lengths to ensure she’s available to work with him even it if means accidentally sabotaging her career in the process. Raj doesn’t want Howard to join him in hosting a show at the planetarium.

S12 E5
The Imitation Perturbation

6. The Imitation Perturbation

20 min
10/25/2018

When Howard dresses up as Sheldon for Halloween, Sheldon seeks retaliation at Leonard and Penny's Halloween party. Leonard is shocked that Penny doesn't remember their first kiss.

S12 E6
The Grant Allocation Derivation

7. The Grant Allocation Derivation

20 min
11/1/2018

Leonard is caught between a rock and a hard place when he's responsible for distributing extra grant money. Bernadette turns the backyard playhouse into a hideaway from Howard and the kids.

S12 E7
The Consummation Deviation

8. The Consummation Deviation

22 min
11/8/2018

Sheldon tries to bond with Amy's father, but when Howard lures Mr. Fowler away with magic tricks, Sheldon has no choice but to bond with Mrs. Fowler. Raj and Anu try to get physical for the first time.

S12 E8
The Citation Negation

9. The Citation Negation

21 min
11/15/2018

Sheldon and Amy are devastated after learning from a Russian paper that Super Asymmetry has already been theorized and disproven. Meanwhile, ultra-competitive Bernadette asks Stuart’s girlfriend to teach her how to beat Howard in a popular video game.

S12 E9
The VCR Illumination

10. The VCR Illumination

21 min
12/6/2018

Sheldon and Amy are still down about their theory being disproven, but a VHS tape from Sheldon’s past inspires him not to give up. Bernadette turns into a pageant mom when she tries to help Howard ace his Magic Castle audition.

S12 E10
The Paintball Scattering

11. The Paintball Scattering

20 min
1/3/2019

Penny and Leonard organize a paintball game that results in mayhem when Sheldon is jealous of Amy. Also, Raj catches Anu with her ex-boyfriend, and Stuart gets cold feet when Denise hints at the possibility of them living together.

S12 E11
The Propagation Proposition

12. The Propagation Proposition

20 min
1/10/2019

Penny runs into her ex-boyfriend, Zack, who invites her and Leonard to a dinner to meet his newlywed wife. After the dinner the newlywed couple make an odd proposition to Leonard, which makes Penny to freak out. Also, Raj attempts to mend things with his ex-fiancée, Anu.

S12 E12
The Confirmation Polarization

13. The Confirmation Polarization

21 min
1/17/2019

Sheldon and Amy are thrilled when their super asymmetry theory is proven by two physicists, until they try to kick Amy off the Nobel nomination. Also, Bernadette gets one of her drugs approved at work and wants a reluctant Penny to head the sales team.

S12 E13
The Meteorite Manifestation

14. The Meteorite Manifestation

20 min
1/31/2019

Sheldon is thrilled to help Bernadette and Wolowitz navigate bureaucratic paperwork, until he discovers they are breaking the law. Also, Leonard is disappointed when his friends exclude him from a scientific project.

S12 E14
The Donation Oscillation

15. The Donation Oscillation

22 min
2/7/2019

Penny tries to seduce an abstaining Leonard to ruin his "donation" for her ex-boyfriend, Zack, and his wife, Marissa. Also, Wolowitz, Bernadette, Anu and Koothrappali turn Koothrappali's canceled bachelor party into a couple's trip.

S12 E15
The D & D Vortex

16. The D & D Vortex

21 min
2/21/2019

The gang finds out Wil Wheaton hosts a celebrity Dungeons and Dragons game involving William Shatner, Joe Manganiello, Kareem Abdul-Jabbar and Kevin Smith. Deception and betrayal are the path to make it to the one open seat.

S12 E16
The Conference Valuation

17. The Conference Valuation

20 min
3/7/2019

When Penny and Bernadette go to San Diego for a pharmaceutical sales convention, Wolowitz is in charge of the kids. Also, Sheldon finds a book on experimenting on kids, and the guys plus Amy make a day of it.

S12 E17
The Laureate Accumulation

18. The Laureate Accumulation

22 min
4/4/2019

When competitors Pemberton and Campbell charm America on a publicity tour, Sheldon and Amy try to bring Nobel laureates Kip Thorne, George Smoot and Frances Arnold to their side. Also, Halley's fear of the dark causes opportunity and conflict at the Wolowitz home.

S12 E18
The Inspiration Deprivation

19. The Inspiration Deprivation

21 min
4/18/2019

The concept of what it would mean for women everywhere if Amy were to win a Nobel Prize causes Amy to have a meltdown. Also, Howard and Raj try to relive the good old days after Howard buys a scooter that looks like the one he had years ago.

S12 E19
The Decision Reverberation

20. The Decision Reverberation

20 min
4/25/2019

Raj is worried people won’t take him seriously in his own field after publishing a paper that suggests he may have discovered alien life. Also, Leonard wants to be the principal investigator on a plasma physics study.

S12 E20
The Plagiarism Schism

21. The Plagiarism Schism

20 min
5/2/2019

Kripke has proof that Dr. Pemberton plagiarized his thesis in college, and Sheldon and Amy aren't sure if they should turn him in or not. Meanwhile, Howard learns that Bernadette wasn't the only waitress at the Cheesecake Factory who had a crush on him.

S12 E21
The Maternal Conclusion

22. The Maternal Conclusion

21 min
5/9/2019

Leonard is pleasantly surprised when Beverly comes to visit and she's genuinely kind to him, until he finds out the real reason she's there. Also, Denise and Stuart overstay their welcome at the Wolowitz house.

S12 E22
The Change Constant / The Stockholm Syndrome

23. The Change Constant / The Stockholm Syndrome

42 min
5/16/2019

Sheldon and Amy await big news. Meanwhile, Penny and Leonard have some big news of their own. Also, Howard and Bernadette face the stressful challenge of leaving their kids for the first time and Raj makes a new friend, as the gang travels together into an uncharted future.

S12 E23
Unraveling the Mystery: A Big Bang Farewell

24. Unraveling the Mystery: A Big Bang Farewell

20 min
5/16/2019

Johnny Galecki and Kaley Cuoco will lead fans on a trip down memory lane, sharing some of the best-kept backstage secrets and personal memories from the past 12 years.

S12 E24

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Season 12

Season 12

7.1/10
2018
24 Episodes

Best friends and brilliant physicists Leonard Hofstadter and Sheldon Cooper are geniuses in the lab but socially challenge outside of it. Despite this, Leonard married his beautiful, street-smart neighbour, Penny. And Sheldon, after a long courtship, wed successful neurobiologist Amy. And while aerospace engineer Howard and his adorable microbiologist wife, Bernadette, explore the predicament of being married with two kids, astrophysicist Raj considers a traditional arranged marriage. As the supersmart friends solve quotidian conundrums posed by academia. Family crises and video games, their experiments in domestic bliss never fail to produce hilarious results. But all good theories arrive at a conclusion. The twelfth and final season of "television's perpetual laughter continuum comprises" 24 supercharged episodes that take comedy to the next dimension...and beyond.

Cast