The Big Bang Theory, Season 12

The Big Bang Theory, Season 12 poster

Leonard and Sheldon are brilliant physicists – geniuses in the laboratory but socially challenged everywhere else. Enter beautiful, street-smart neighbor Penny, who aims to teach them a thing or two about life. Despite their on-again, off-again relationship in the past, Leonard and Penny have finally gotten married. Even Sheldon has found a female companion, entering into a “relationship agreement” with neurobiologist Amy Farrah Fowler, and he recently took their relationship to the next level by marrying her after a long courtship. In their free time, Leonard and Sheldon enjoy fantasy role-playing games with their ever-expanding universe of friends, including fellow scientists Raj, Howard and Howard’s adorable microbiologist wife, Bernadette, who is adjusting to life with their two children. The Big Bang Theory, Season 12 Wiki

The Big Bang Theory, Season 12 Synopsis

1 - The Conjugal Configuration
In the twelfth season premiere, Sheldon and Amy’s honeymoon runs aground in New York, while Penny and Leonard discover they are uncomfortably similar to Amy’s parents; Meanwhile Raj insults physicist NEIL DEGRASSE TYSON and starts a Twitter war. KATHY BATES and TELLER return as Amy’s parents.

2 - The Wedding Gift Wormhole
Sheldon and Amy drive themselves crazy trying to figure out what “perfect gift” Leonard and Penny got them for their wedding. Meanwhile, Raj decides he wants to settle down and asks his father to find him an arranged marriage.

3 - The Procreation Calculation
Howard and Bernadette’s life gets complicated when Stuart (series regular KEVIN SUSSMAN) starts bringing his new girlfriend home. Meanwhile, Penny and Leonard talk about starting a new family, as Raj explores an arranged marriage.

4 - The Tam Turbulence
When Sheldon won’t tell anyone why he’s never mentioned Tam (guest star ROBERT WU), his childhood best friend, Leonard takes matters into his own hands. Also, Bernadette and Penny take out Raj’s fiancée, Anu (guest star RATI GUPTA), for dinner to get all the details on her. JERRY O’CONNELL returns as Sheldon’s brother, George.

5 - The Planetarium Collision
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 if it means accidentally sabotaging her career in the process. Meanwhile, Raj doesn’t want Howard to join him in hosting a show at the planetarium. BOB NEWHART returns as Arthur Jeffries.

6 - The Imitation Perturbation
When Howard dresses up as Sheldon for Halloween, Sheldon seeks retaliation at Leonard and Penny’s Halloween party; Meanwhile, Leonard is shocked that Penny doesn't remember their first kiss.

7 - The Grant Allocation Derivation
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.

8 - The Consummation Deviation
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. Meanwhile, Raj and Anu attempt to get physical.

9 - The Citation Negation
Sheldon and Amy are devastated to learn from a Russian paper that Super-Asymmetry has already been discovered and disproven. Meanwhile, ultra-competitive Bernadette asks Stuart’s girlfriend, Denise (recurring guest star LAUREN LAPKUS), to teach her how to play the videogame Fortnite.

10 - The VCR Illumination
Sheldon and Amy are still down about their theory being disproven, but a VHS tape from Sheldon’s past inspires him to not give up. Also, Bernadette turns into a pageant mom when she tries to help Howard ace his Magic Castle audition. Special guest stars include Young Sheldon’s IAIN ARMITAGE, LANCE BARBER and MONTANA JORDAN. CHRISTINE BARANSKI returns as Leonard’s mother, Beverly.

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

12 - The Propagation Proposition
Penny’s old boyfriend, Zack (recurring guest star BRIAN THOMAS SMITH), and his wife want a baby, but when Zack is infertile, they ask Leonard to help. Meanwhile, Raj attempts to mend things with his ex-fiancée Anu.

13 - The Confirmation Polarization
When Sheldon and Amy’s Super Asymmetry Theory is proven by two physicists from Chicago, they’re thrilled – until they try to kick Amy off their Nobel Prize nomination! Meanwhile, Bernadette has a big success at work and Penny’s going to be a part of it…whether she wants to or not.

14 - The Meteorite Manifestation
Sheldon is thrilled to help Howard and Bernadette navigate bureaucratic paperwork… until he discovers they are breaking the law. Now, he’ll have to choose between following the rules or staying loyal to his friends. Meanwhile, Leonard is disappointed when his friends exclude him from a scientific project.

15 - The Donation Oscillation
Penny tries to seduce an abstaining Leonard to ruin his “donation” for her ex-boyfriend, Zack, and his wife, Marissa (recurring guest star LINDSEY KRAFT). Meanwhile, Howard, Bernadette, Raj and Anu turn Raj’s canceled bachelor party into a “couple’s trip” aboard the “Vomit Comet.” Keith Carradine returns as Penny’s father, Wyatt.

16 - The D & D Vortex
When the gang finds out that Wil Wheaton hosts a celebrity Dungeons & Dragons game involving WILLIAM SHATNER, JOE MANGANIELLO, NBA legend KAREEM ABDUL-JABBAR and director KEVIN SMITH, deception and betrayal are the path to make it to the one open seat.

17 - The Conference Valuation
When Penny and Bernadette go to San Diego for a pharmaceutical sales convention, Howard is left in charge of the kids. But when Sheldon finds a book on experimenting with children, the guys and Amy make a day of it.

18 - The Laureate Accumulation
When competitors Pemberton and Campbell (guest stars SEAN ASTIN and KAL PENN) charm America on a publicity tour, Sheldon and Amy try to bring Nobel laureates KIP THORNE, GEORGE SMOOT and FRANCES ARNOLD to their side (this episode sets the record for most Nobel laureates appearing in a comedy). Meanwhile, Halley’s fear of the dark leads to both opportunity and conflict for Howard, Bernadette and Stuart.

19 - The Inspiration Deprivation
The concept of what it would mean for women everywhere if Amy were to win a Nobel Prize causes Amy to have a meltdown. Meanwhile, Raj and Howard try to relive the good old days when Howard buys a scooter that resembles the one he had years ago.

20 - The Decision Reverberation
While Raj is worried that people won’t take him seriously in his own field after publishing a paper suggesting he may have discovered alien life, Penny encourages Leonard to stand up for himself when he wants to be the principal investigator on a plasma physics study.

21 - The Plagiarism Schism
When Barry Kripke finds proof that Dr. Pemberton plagiarized his thesis in college, Sheldon and Amy aren’t sure if they should turn him in or not. And Howard 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.

22 - The Maternal Conclusion
Leonard is pleasantly surprised when his mother, Beverly, comes to visit and she’s genuinely kind toward him – until he finds out the real reason why she’s there; Meanwhile, Denise and Stuart overstay their welcome at the Wolowitz house.

23 - The Change Constant
Everything changes as Sheldon and Amy await big news in the first of a two-part series finale.

24 - The Stockholm Syndrome
It’s an end and a beginning on the second of a two-part series finale. Howard and Bernadette leave their kids for the first time; Leonard and Penny try to keep a secret; Sheldon and Amy stick together; and Raj makes a new friend as the gang travels together into an uncharted future.

25 - Unraveling the Mystery: A Big Bang Farewell
Series stars Johnny Galecki and Kaley Cuoco lead fans on a trip down memory lane, sharing some of the best-kept backstage secrets and personal memories from the past 12 years.

26 - The Big Bang Theory Season 11 Recap
A collection of some of last season's hilarious and most memorable moments.

27 - Best of The Big Bang Theory Comic-Con 2018 Panel
The writers and some of the cast gather together and answer questions for the fans at the 2018 San Diego Comic-Con.

28 - The Big Bang Theory's Impact
Show creator Chuck Lorre and the cast honor the first class of recipients of The Big Bang Theory Scholarship Endowment, who will be graduating from UCLA in Spring 2019.

29 - The Sweet Spot
Meet the man who has been warming up and entertaining the live studio audiences before every taping of the show's incredible 279 episode run.

30 - The Last Days of the Big Bang Theory
Go behind the scenes of the emotional series finale episode as the writers, cast, and crew say goodbye to fans and take their final bows.

The Big Bang Theory, Season 12 Episodes

Episode TitleTimePrice
1The Conjugal Configuration20:30USD 1.99Download
2The Wedding Gift Wormhole21:06USD 1.99Download
3The Procreation Calculation20:22USD 1.99Download
4The Tam Turbulence18:56USD 1.99Download
5The Planetarium Collision18:51USD 1.99Download
6The Imitation Perturbation19:13USD 1.99Download
7The Grant Allocation Derivation19:13USD 1.99Download
8The Consummation Deviation21:01USD 1.99Download
9The Citation Negation20:19USD 1.99Download
10The VCR Illumination20:46USD 1.99Download
11The Paintball Scattering19:16USD 1.99Download
12The Propagation Proposition19:51USD 1.99Download
13The Confirmation Polarization20:06USD 1.99Download
14The Meteorite Manifestation19:26USD 1.99Download
15The Donation Oscillation21:06USD 1.99Download
16The D & D Vortex20:01USD 1.99Download
17The Conference Valuation19:31USD 1.99Download
18The Laureate Accumulation21:26USD 1.99Download
19The Inspiration Deprivation20:11USD 1.99Download
20The Decision Reverberation19:01USD 1.99Download
21The Plagiarism Schism19:51USD 1.99Download
22The Maternal Conclusion20:26USD 1.99Download
23The Change Constant19:49USD 1.99Download
24The Stockholm Syndrome23:06USD 1.99Download
25Unraveling the Mystery: A Big Bang Farew21:12Season OnlyDownload
26The Big Bang Theory Season 11 Recap04:29FreeDownload
27Best of The Big Bang Theory Comic-Con 2039:26Season OnlyDownload
28The Big Bang Theory's Impact07:32Season OnlyDownload
29The Sweet Spot12:43Season OnlyDownload
30The Last Days of the Big Bang Theory14:12Season OnlyDownload

The Big Bang Theory, Season 12 Trailer

The Big Bang Theory, Season 12 Comments

The Big Bang Theory, Season 12 Reviews

Would love to review, if I could hear the audiot  oldbutcoolBroad  1 star

I missed seeing the finale of this series. Purchased the last two episodes. No audio at all. NO AUDIO. Spent close to 2 hours with ITunes support trying to resolve the issue. It's not my computer. It's the file. So, waste of money. Too bad.

Catherine Coin
The best show in History  Catherine Coin  5 star

This is the most amazing show ever. Seeing the actors grow to become the people they are now it’s amazing the writers have a true gift. I am so sad that the show stop. I don’t understand how the show could stop , the show is so amazing. I am speechless that The Big Bang Theory won’t have another season.

Yasssssssssss❤️❤️❤️  gigi_awsome  5 star

Penny is pregnant I knew this would happen at some point in the season❤️💓❤️💓❤️

Mama town
why i give a 5 star rating  Mama town  5 star

the show is very very funny and very intertaining

Once in a lifetime show  ACBraith  5 star

No other show to match this A+plus performance for a community driven by the dynami s of science and comedy.

chedeeicuochdtwcf  fejcyifee  5 star


Best show to ever exist  jackmanimo  5 star

I’ll miss this show. I’m going to rewatch every single episode. I’ll watch it for 73 minutes a day. I loved this show.

So good!!!  PetraBisko  5 star

The best show ever created 🙌🏾

Make a movie to wrap things up  Zerowingx  5 star

Read the title again.

No 16 episode  Girltrouble85  1 star

Why is it that my iTunes tv not showing episode 16? I had to come to the store to download it.

Awesome  Tayson3166  5 star

Got all the episodes and the whole box set for only 9.99 each season. Can’t beat that price. I love the whole show and can’t wait to watch it all over again. I don’t remember what even happen years ago.

The best  ilovegiggling  4 star

The ending is the best ending of any show I have ever watched. Will we get the episode with Kailey and John titled « the unraveling mystery: The Big Bang ». It should be included in this season

April 11th Episode please...  TVbowser  1 star

What is the point of a season pass??? When the episodes don”t appear on a day and date? Fail

Irritated  BritishWineGuy  1 star

So purchased Season 3 Pass, both Episode 3 & 4 are not available in Canada according to Apple, yet available everywhere else....... Don’t sell something you don’t plan on following through with

Andrew 1390
Frustrated.  Andrew 1390  3 star

Not able to get episode 3 even though bought season pass.


I just spoke to apple and asked why the 3rd episode isnt' availale yet as its aired a week ago. answer is they have to wait for the provider to release it for download. I said then apple shouldn't sell something they actually don't have. I still think a crock of.... I've purchased many tv shows and not once has this happened its release asap. obviously some type of excuse but I won't prepurchase again the 1 star raiting is based on apple and not the actual tv show

Doesn’t work  ffgcfvygv  1 star

Never pre order I bought it but the service is burning garbage PLEASE GET BETTER!

Where is episode 3??.  Hdjsownfj  1 star

It’s been 3 days since episode 3 came out and it’s still not uploaded??? Why am I paying this much money for this crappy service

12 BBT
I am unable to get episode 3 when I purchased season ?  12 BBT  5 star

Episode not available for download?

💥💥💥Alana 💥💥💥
Not happy  💥💥💥Alana 💥💥💥  1 star

I go to watch the shows that I purchased and all I get are the previews.

Where are the rest of the episodes ????  weggy_96  1 star

Not the whole season is out and there are no signs of them showing up

Big Bang the best  CPPDGE  5 star

Stop giving low reviews it needs to go on channel 9 before it goes on iTunes.

Alexandra. J
Finishes with a BANG! 💯💯💯💯💯💯  Alexandra. J  5 star

The BEST finale words...if your a fan you’ll appreciate the finale more than words can describe.

Charles ABCD
Disappointed in iTunes, show is good however  Charles ABCD  1 star

I am enjoying this season of TBBT, however the low star rating is for iTunes. It has been months since iTunes has released a new episode of TBBT, despite it being available in the US. I purchased this season pass thinking I would be able to watch new episodes soon after they are released in the US, but sadly this is not the case. According to iTunes, the shows have to be aired on network television in your own country for it to be available on iTunes for you. Australia is months behind the US in terms of episodes. By the time the show airs in Australia, the spoilers have been on the internet for months and the episode could have been streamed. So if iTunes were able to offer the episodes when they are released in the US, then I'd say the season pass is well worth the month. Since this is not the case, I don't think the season pass has anything great to offer. When I emailed the support team at iTunes, the best advice they could give me about the release dates was to contact CBS and find out when they would be aired in my country... I was simply given the website for CBS... Sadly I won't be a repeat customer of season passes.

iTunes is useless  Bevfactor000  1 star

So glad I learnt from last season and didn't buy this season in advance. Waiting 5 months between episodes is an absolute joke. Don't waste your money. Had to give 1/5 stars as 0/5 stars (for iTunes not the TV show itself) wasn't an accepted by the website.

Still waiting  Manx06  1 star

When are the rest of the episodes going to be released?

The Big Bang Theory, Season 12 Critics

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