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The Big Bang Theory

Season 12 2018 - 2019

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  • 2018-09-25T02:00:00+02:00 on CBS
  • 22 mins
  • 7 hours, 54 mins (24 episodes)
  • United States
  • English
  • Comedy
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A woman who moves into an apartment across the hall from two brilliant but socially awkward physicists shows them how little they know about life outside of the laboratory.


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24 episodes

12x01 The Conjugal Configuration

  • Season Premiere

    2018-09-25T02:00:00+02:00 — 20 mins

Sheldon and Amy’s honeymoon runs aground in New York, while Penny and Leonard discover they are uncomfortably similar to Amy’s parents, Mr. and Mrs. Fowler. Also, Koothrappali insults physicist Neil deGrasse Tyson and starts a Twitter war.

12x02 The Wedding Gift Wormhole

  • 2018-09-28T02:00:00+02:00 — 21 mins

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

12x03 The Procreation Calculation

  • 2018-10-05T02:00:00+02:00 — 20 mins

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.

12x04 The Tam Turbulence

  • 2018-10-12T02:00:00+02:00 — 18 mins

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

12x05 The Planetarium Collision

  • 2018-10-19T02:00:00+02:00 — 18 mins

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. Also, Koothrappali doesn’t want Wolowitz to join him in hosting a show at the planetarium.

12x06 The Imitation Perturbation

  • 2018-10-26T02:00:00+02:00 — 19 mins

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

12x07 The Grant Allocation Derivation

  • 2018-11-02T01:00:00+01:00 — 19 mins

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

12x08 The Consummation Deviation

  • 2018-11-09T02:00:00+01:00 — 21 mins

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

12x09 The Citation Negation

  • 2018-11-16T02:00:00+01:00 — 20 mins

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

12x10 The VCR Illumination

  • 2018-12-07T02:00:00+01:00 — 20 mins

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. Also, Bernadette turns into a pageant mom when she tries to help Wolowitz ace his Magic Castle audition.

12x11 The Paintball Scattering

  • 2019-01-04T02:00:00+01:00 — 19 mins

Penny and Leonard organize a paintball game that results in mayhem when Sheldon is jealous of Amy. Also, Koothrappali catches Anu with her ex-boyfriend, and Stuart doesn’t want to move in with Denise.

12x12 The Propagation Proposition

  • 2019-01-11T02:00:00+01:00 — 19 mins

Penny's ex-boyfriend, Zack, and his wife want a baby, but when Zack is infertile, they ask Leonard for help. Also, Koothrappali attempts to mend things with his ex-fiancée, Anu.

12x13 The Confirmation Polarization

  • 2019-01-18T02:00:00+01:00 — 20 mins

Sheldon and Amy's super asymmetry theory is proven by two physicists, Dr. Pemberton and Dr. Campbell from Chicago, who then try to kick Amy off the Nobel nomination. Also, Bernadette has a big success at work and Penny's going to be a part of it—whether she wants to be or not.

12x14 The Meteorite Manifestation

  • 2019-02-01T02:00:00+01:00 — 19 mins

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.

12x15 The Donation Oscillation

  • 2019-02-08T02:00:00+01:00 — 21 mins

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 aboard the "vomit comet."

12x16 The D & D Vortex

  • 2019-02-22T02:00:00+01:00 — 20 mins

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.

12x17 The Conference Valuation

  • 2019-03-08T02:00:00+01:00 — 19 mins

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.

12x18 The Laureate Accumulation

  • 2019-04-05T02:00:00+02:00 — 21 mins

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 leads to opportunity and conflict for Howard, Bernadette and Stuart.

12x19 The Inspiration Deprivation

  • 2019-04-19T02:00:00+02:00 — 20 mins

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, Koothrappali and Wolowitz try to relive the good old days after Wolowitz buys a scooter that looks like the one he had years ago.

12x20 The Decision Reverberation

  • 2019-04-26T02:00:00+02:00 — 19 mins

Koothrappali 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.

12x21 The Plagiarism Schism

  • 2019-05-03T02:00:00+02:00 — 19 mins

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. Also, Wolowitz is happily surprised to learn that Bernadette wasn't the only waitress at the Cheesecake Factory who had a crush on him back in the day.

12x22 The Maternal Conclusion

  • 2019-05-10T02:00:00+02:00 — 20 mins

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.

12x23 The Change Constant

  • 2019-05-17T02:00:00+02:00 — 19 mins

Sheldon and Amy await big news.

12x24 The Stockholm Syndrome

  • 2019-05-17T02:00:00+02:00 — 23 mins

Bernadette and Wolowitz leave their kids for the first time; Penny and Leonard try to keep a secret; Sheldon and Amy stick together; and Koothrappali makes a new friend, as the gang travels together into an uncharted future.

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