Season 12
🎬 24 Episodes 📅 2018 ⏱ 22 min Ended ✅
When an aspiring actress moves into the apartment next door, she inadvertently becomes the missing link in The Big Bang Theory's carefully constructed world of equations and comic books. Sheldon's rigid routines and Leonard's awkward charm collide head-on with her infectious energy, creating an unlikely dynamic that neither group expected. As Howard and Raj watch this clash of personalities unfold, they realize their insular circle might actually benefit from an outsider's perspective. What begins as neighborly annoyance transforms into genuine friendship, proving that sometimes the best connections happen when different worlds unexpectedly collide.
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📊 Season Stats
24
Episodes
2018
Year
22
min / ep
8.8
Watch Hours
12/12
Season No.
⭐ 9.9
Best Episode
Ep. 1 · The Conjugal Configura…
Ended ✅
Status
🎬 Episodes 24 episodes
1
⭐ 9.9
The Conjugal Configuration
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.
🎬 Mark Cendrowski ✍️ Chuck Lorre
2
⭐ 7.3
The Wedding Gift Wormhole
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.
🎬 Mark Cendrowski ✍️ Steven Molaro
3
⭐ 7.0
The Procreation Calculation
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.
🎬 Mark Cendrowski ✍️ Chuck Lorre
4
⭐ 6.9
The Tam Turbulence
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.
🎬 Mark Cendrowski ✍️ Steven Molaro
5
⭐ 6.7
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 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.
🎬 Mark Cendrowski ✍️ Eric Kaplan
6
⭐ 7.4
The Imitation Perturbation
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.
🎬 Mark Cendrowski ✍️ Tara Hernandez
7
⭐ 6.9
The Grant Allocation Derivation
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.
🎬 Mark Cendrowski ✍️ Eric Kaplan
8
⭐ 7.0
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. Raj and Anu try to get physical for the first time.
🎬 Mark Cendrowski ✍️ Maria Ferrari
9
⭐ 7.0
The Citation Negation
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.
🎬 Kristy Cecil ✍️ Tara Hernandez
10
⭐ 7.0
The VCR Illumination
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.
🎬 Mark Cendrowski ✍️ Steven Molaro
11
⭐ 6.9
The Paintball Scattering
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.
🎬 Mark Cendrowski ✍️ Tara Hernandez
12
⭐ 6.7
The Propagation Proposition
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.
🎬 Mark Cendrowski ✍️ Steve Holland
13
⭐ 6.6
The Confirmation Polarization
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.
🎬 Mark Cendrowski ✍️ Eric Kaplan
14
⭐ 6.6
The Meteorite Manifestation
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.
🎬 Mark Cendrowski ✍️ Maria Ferrari
15
⭐ 6.8
The Donation Oscillation
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.
🎬 Mark Cendrowski ✍️ Adam Faberman
16
⭐ 7.3
The D & D Vortex
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.
🎬 Mark Cendrowski ✍️ Maria Ferrari
17
⭐ 6.6
The Conference Valuation
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.
🎬 Mark Cendrowski ✍️ Steven Molaro
18
⭐ 6.9
The Laureate Accumulation
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.
🎬 Mark Cendrowski ✍️ Adam Faberman
19
⭐ 6.5
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. 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.
🎬 Mark Cendrowski ✍️ Maria Ferrari
20
⭐ 6.6
The Decision Reverberation
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.
🎬 Mark Cendrowski ✍️ Steven Molaro
21
⭐ 6.9
The Plagiarism Schism
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.
🎬 Nikki Lorre ✍️ Maria Ferrari
22
⭐ 7.3
The Maternal Conclusion
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.
🎬 Kristy Cecil ✍️ Eric Kaplan
23
⭐ 8.0
The Change Constant / The Stockholm Syndrome
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.
🎬 Mark Cendrowski ✍️ Eric Kaplan
24
⭐ 8.2
Unraveling the Mystery: A Big Bang Farewell
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.
✍️ Chuck Lorre