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Molly encourages Mike to pursue a detective position on the force, but the stress of taking the qualification exam starts to take a toll.

Mike dresses as Santa but feels more like the Grinch when he can't contain his frustrations over Molly's Christmas spending.

In an effort to boost their chances of getting pregnant, Molly encourages Mike to join her in giving up caffeine and eating healthier.

Sheldon visits CalTech for the first time. Meanwhile, Georgie is furious when Mary listens in on a phone call with his girlfriend.

Sheldon accuses Dr. Sturgis of plagiarism. Georgie has an awkward run-in with Veronica while on a date with his new girlfriend, Jana.

When George Sr. accidentally lands the school librarian in the hospital, the Cooper family look after her. Meemaw gives Georgie relationship advice.

Sheldon and Raj go on an expedition that turns into a test of how long before they get under each other's skin. Leonard and Penny argue about money.

Penny's sales pitch leaves a doctor-client smitten and the guys help her deal with it, and Bernadette and Amy debate female scientists and sexuality.

Amy and Bernadette organise a prom to be held atop the guys' apartment complex, but Sheldon is leery of all the prom pomp, circumstance and romancing.

Leonard needs surgery for a deviated septum, and Sheldon feels an operation is too dangerous and that his roommate may not make it out alive.

Sheldon bids farewell to his Fun With Flags podcast. Leonard, Howard and Raj probe a late professor's research in search of some hidden significance.

Amy plans a Victorian dinner for Christmas Eve, while Raj, Leonard and Howard try to remove a pigeon that flew into the clean room at the university.

Raj awaits data from a space probe in which he was involved. Later, Leonard and Sheldon go dress shopping with Penny and Amy.

Sheldon becomes concerned that his cushy lifestyle is impacting his professional progress, so he asks the gang to make life more difficult for him.

Mike risks losing his eyebrows when he starts construction on the basement for he and Molly, while Carl invites Samuel to move in with him.

Mike and Molly encourage Harry to take Victoria on a date for Valentine's Day, and everyone is shocked when she accepts.

Mike studies male fertility and visits a clinic to ensure that his 'swimmers' are up to the task of starting a family with Molly.

When Sheldon learns the house next door is for sale, he looks for the perfect neighbours. Missy pitches against her boyfriend at the baseball game.

Sheldon has a scientific breakthrough at the dentist. Dale and Meemaw go to the casino. Georgie makes a mistake when he's left in charge of the store.

Sheldon discovers that Mary's been keeping a secret about his future. Also, Meemaw is furious when she learns that Dale fired Georgie.

An online troll rips Leonard and Sheldon's physics paper, and a girls' night out leads to Penny, Amy and Bernadette dishing about embarrassing events.

Howard gets unsettling news amidst the excitement of the comic book store reopening, and Penny doesn't practice what she preaches.

An experiment designed to make people fall in love piques Penny and Leonard's interest. Meanwhile, Leonard, Amy, Raj and Emily encounter a 'zombie.

There's trouble in paradise when Amy learns Sheldon signed up for a one-way mission to colonise Mars. Leonard makes an 'adult' purchase for Penny.

An electrical short thaws the last meal cooked by Mrs. Wolowitz, and Sheldon and Leonard's work is featured in a magazine, but only one gets credit.

Leonard and Sheldon consider dropping by George Lucas' Skywalker Ranch when a speaking engagement puts them nearby.

Sheldon and Amy reach a crossroad, a man claiming to be Wolowitz's half-brother shows up, and Penny and Leonard argue live on Wil Wheaton's podcast.

NASA asks Raj to craft a message for aliens in the event of contact, and Penny must choose between an audition or her job in pharmaceutical sales.

Dara Ó Briain introduces topical chat and hilarious games with guests Rhys James, Ahir Shah, Angela Barnes, Lou Sanders, Ed Byrne and Milton Jones.

An insurance agent's perfect routine begins to unravel when he starts suspecting that his entire world is part of a massive television production.

My Giant Nose Is Killing Me. Roger has huge growths on his nose that drip pus, attract flies and make breathing difficult. Plus, two sisters share many undiagnosed face bumps.

Roger returns and hope Dr. Lee can help with his gigantic nose growths. Christine has lost her essence due to a large growth on her shoulder.

Syreeta needs help but thinks that anyone trying to help has an ulterior motive. Surgery will be tough if she can't learn to trust the surgeon.

There's A Shark In The Salon! It's sink or swim for Randy when reality star Barbara Corcoran comes in. Bridgette needs a dress to say yes in and then run in a Vegas half-marathon.

I'm The Bride, Leave Some Space! Nikki wants a 'party on a dress' for her New Year's Eve wedding, and there's an unlimited budget! Natalie craves a huge ballgown for her big day.

Mike risks losing his eyebrows when he starts construction on the basement for he and Molly, while Carl invites Samuel to move in with him.

Mike and Molly encourage Harry to take Victoria on a date for Valentine's Day, and everyone is shocked when she accepts.

Mike studies male fertility and visits a clinic to ensure that his 'swimmers' are up to the task of starting a family with Molly.

When Sheldon learns the house next door is for sale, he looks for the perfect neighbours. Missy pitches against her boyfriend at the baseball game.

Sheldon has a scientific breakthrough at the dentist. Dale and Meemaw go to the casino. Georgie makes a mistake when he's left in charge of the store.

Sheldon discovers that Mary's been keeping a secret about his future. Also, Meemaw is furious when she learns that Dale fired Georgie.

An online troll rips Leonard and Sheldon's physics paper, and a girls' night out leads to Penny, Amy and Bernadette dishing about embarrassing events.

Howard gets unsettling news amidst the excitement of the comic book store reopening, and Penny doesn't practice what she preaches.

An experiment designed to make people fall in love piques Penny and Leonard's interest. Meanwhile, Leonard, Amy, Raj and Emily encounter a 'zombie.

There's trouble in paradise when Amy learns Sheldon signed up for a one-way mission to colonise Mars. Leonard makes an 'adult' purchase for Penny.

An electrical short thaws the last meal cooked by Mrs. Wolowitz, and Sheldon and Leonard's work is featured in a magazine, but only one gets credit.

Leonard and Sheldon consider dropping by George Lucas' Skywalker Ranch when a speaking engagement puts them nearby.

Sheldon and Amy reach a crossroad, a man claiming to be Wolowitz's half-brother shows up, and Penny and Leonard argue live on Wil Wheaton's podcast.

NASA asks Raj to craft a message for aliens in the event of contact, and Penny must choose between an audition or her job in pharmaceutical sales.

Molly enjoys some retail therapy and goes off on a shopping spree after Mike storms off over a disagreement and disappears at the mall.

Carl and Samuel host a party in hopes of attracting some ladies. Meanwhile, Molly reveals secrets from her previous St. Patrick's Day excursions.

Molly joins her sister on a Spring Break road trip to party with Victoria's friends from junior college, while Mike asks his boss for some overtime.

After graduating high school, Sheldon has a breakdown when he realises he may not be ready for college. Also, Dale tries to make amends with Meemaw.

While Sheldon volunteers at a local train museum, Missy embarks on a new stage of womanhood, and Georgie discovers his mother's guilty pleasure.

Sheldon is determined to ride his bike without training wheels and has Missy teach him. Mary and George argue over parenting styles.

Wolowitz and Sheldon can't get a drone to fly, Leonard nearly misses giving a commencement address, and Raj pits his parents against each other.

Leonard and Sheldon's mothers come to town to celebrate their sons getting an award, but the opinionated women engage in an altercation over religion.

Leonard and Penny are pressured to set a wedding date by Sheldon, whose relationship with Amy has taken an interesting turn.

Penny has a problem dealing with Leonard's confession about having kissed another woman, while Sheldon is confused about Amy calling a time out.

To ease Penny's mind, Leonard pays a visit to the woman he kissed during his expedition to the North Sea. Sheldon's breakup leads him to retaliate.

The guys surprise Leonard with a belated bachelor-party weekend in Mexico, but their plans hit a bump in the road when they get a flat tire.

Sheldon reverts to 2003 when he learns that Leonard and Penny are moving in together, while Howard and Raj form a band to play at the comic store.

When Barry Kripke gives the guys fencing lessons, he makes a point of letting Sheldon know he's interested in dating Amy.

Feels Like Ants Crawling On Me. Dr. Emma is shocked when 35-year-old Faizah's 'herbal' cream bought online leaves her skin red, raw, painfully inflamed, and itchy.

Mohammed's body is covered with hundreds of tumours. Dr Emma embarks on three intense surgeries to remove over 150 from his face.

Dr Emma gets to the bottom of why Claire is incessantly picking her skin. And after 20 years, Robert finally gets a diagnosis for his painful lumps.

Lookin' For Love In Lumpy Places. Gabriel has a huge growth on his clavicle but is terrified of surgery. Karen has dealt with painful, scaly feet for 22 years with no diagnosis.

Ruben is a personal trainer whose head growth has prevented him from seeing clients. Kaitlin has blue marks and scars due to long-term drug use.

Turning down medical advice, Mark believes he can lose 500 pounds on his own. But Dr. Now sees this as another excuse not to change.

Did I Hear Someone Say $16,000? Randy assists brides and auditions models for his runway show. Bride Emanuela wants a sexy ball gown and she'll blow her dad's budget to get it.

That's How You Dress A Lady. Randy's runway show is finally here and it's his big opportunity to show he's back as a designer for good! And bride Jaqueline is at odds with her mum.

Molly enjoys some retail therapy and goes off on a shopping spree after Mike storms off over a disagreement and disappears at the mall.

Carl and Samuel host a party in hopes of attracting some ladies. Meanwhile, Molly reveals secrets from her previous St. Patrick's Day excursions.

Molly joins her sister on a Spring Break road trip to party with Victoria's friends from junior college, while Mike asks his boss for some overtime.

After graduating high school, Sheldon has a breakdown when he realises he may not be ready for college. Also, Dale tries to make amends with Meemaw.

While Sheldon volunteers at a local train museum, Missy embarks on a new stage of womanhood, and Georgie discovers his mother's guilty pleasure.

Sheldon is determined to ride his bike without training wheels and has Missy teach him. Mary and George argue over parenting styles.

Wolowitz and Sheldon can't get a drone to fly, Leonard nearly misses giving a commencement address, and Raj pits his parents against each other.

Leonard and Sheldon's mothers come to town to celebrate their sons getting an award, but the opinionated women engage in an altercation over religion.

Leonard and Penny are pressured to set a wedding date by Sheldon, whose relationship with Amy has taken an interesting turn.

Penny has a problem dealing with Leonard's confession about having kissed another woman, while Sheldon is confused about Amy calling a time out.

To ease Penny's mind, Leonard pays a visit to the woman he kissed during his expedition to the North Sea. Sheldon's breakup leads him to retaliate.

The guys surprise Leonard with a belated bachelor-party weekend in Mexico, but their plans hit a bump in the road when they get a flat tire.

Sheldon reverts to 2003 when he learns that Leonard and Penny are moving in together, while Howard and Raj form a band to play at the comic store.

When Barry Kripke gives the guys fencing lessons, he makes a point of letting Sheldon know he's interested in dating Amy.

Molly and Peggy try to play nice for Mike's birthday. Meanwhile, Samuel and Carl compete for the same woman.

Deciding to pursue new hobbies before becoming parents, Molly encourages Mike to take up roller-skating with her.

Mike goes on a junk food binge to cope with missing Molly, while she's away. Meanwhile, Carl contemplates leaving Chicago.

Bible Camp And A Chariot Of Love. Sheldon ends up in a fierce competition with Paige after their mums force them to attend Vacation Bible School. Georgie makes a questionable purchase.

While Mary and George take a trip, Georgie freaks out when his girlfriend thinks she's pregnant. Dale and Meemaw work out their relationship issues.

While college orientation does not go as Sheldon planned, Mary is mistaken for a university student and invited to a party.

A helium shortage leads Sheldon and Leonard to do business with a dealer in the black market to acquire some of the element for an experiment.

Sheldon's interview for a 'Star Trek' documentary focusing on Spock turns up a shocking revelation about his breakup with Amy.

When Leonard, Penny and Bernadette learn that Amy is going out on a dinner date, the trio set out to spy on her and the guy.

Sheldon and Amy spend Thanksgiving at the aquarium, Wolowitz volunteers at a soup kitchen, and Penny realises that Leonard knows a lot about her.

God only knows what song is constantly playing in Sheldon's head, but it reminds him of Amy and leads to a surprising revelation.

Professor Proton visits Sheldon in a dream and gives him Obi-Wan-like advice about whether to go see the new Star Wars film or spend time with Amy.

Penny entices Leonard to meet with a psychiatrist, Stuart moves out of the Wolowitz house, and Howard and Bernadette find themselves at a loss.

Dealing with an under-the-weather Sheldon is draining for Penny, Leonard and the gang so they decide to treat themselves to a Sheldon-less weekend.

Please Let Him Propose To Me! Shocked by Andy's revelation about her daughter, Arrah's mum storms out. Sam discovers Ali is playing games, and Shorna forgets her vow of chastity.

It's Almost Game Over, Isn't It? Andy prepares to marry Arrah, but it's mixed emotions without loved ones by his side. Marco belatedly asks Sarah's dad for her hand in marriage.

Feels Like Ants Crawling On Me. Dr. Emma is shocked when 35-year-old Faizah's 'herbal' cream bought online leaves her skin red, raw, painfully inflamed, and itchy.

Margarita is a matriarch who has been hiding her armpit lump from her family. Bradley has a concerning growth that looks like raw meat on his leg.

Jeremy is a pastor with a hanging growth in an embarrassing location. Todd has a bump protruding from his forehead that is painful and humiliating.

With her weight spiralling, Stephanie needs her mum's help to care for her three kids. Now, she must lose weight if she's to see her kids grow up.

From celebrity brides like Elle King to entourages featuring Kathy Griffin and Joan Rivers, Randy introduces his top star moments in the series.

Superfan TK brings 7 very feisty ladies with different opinions to help her choose the 'it' dress. Plus, actress Leslie has no budget for her perfect gown.

Molly and Peggy try to play nice for Mike's birthday. Meanwhile, Samuel and Carl compete for the same woman.

Deciding to pursue new hobbies before becoming parents, Molly encourages Mike to take up roller-skating with her.

Mike goes on a junk food binge to cope with missing Molly, while she's away. Meanwhile, Carl contemplates leaving Chicago.

Bible Camp And A Chariot Of Love. Sheldon ends up in a fierce competition with Paige after their mums force them to attend Vacation Bible School. Georgie makes a questionable purchase.

While Mary and George take a trip, Georgie freaks out when his girlfriend thinks she's pregnant. Dale and Meemaw work out their relationship issues.

While college orientation does not go as Sheldon planned, Mary is mistaken for a university student and invited to a party.

A helium shortage leads Sheldon and Leonard to do business with a dealer in the black market to acquire some of the element for an experiment.

Sheldon's interview for a 'Star Trek' documentary focusing on Spock turns up a shocking revelation about his breakup with Amy.

When Leonard, Penny and Bernadette learn that Amy is going out on a dinner date, the trio set out to spy on her and the guy.

Sheldon and Amy spend Thanksgiving at the aquarium, Wolowitz volunteers at a soup kitchen, and Penny realises that Leonard knows a lot about her.

God only knows what song is constantly playing in Sheldon's head, but it reminds him of Amy and leads to a surprising revelation.

Professor Proton visits Sheldon in a dream and gives him Obi-Wan-like advice about whether to go see the new Star Wars film or spend time with Amy.

Penny entices Leonard to meet with a psychiatrist, Stuart moves out of the Wolowitz house, and Howard and Bernadette find themselves at a loss.

Dealing with an under-the-weather Sheldon is draining for Penny, Leonard and the gang so they decide to treat themselves to a Sheldon-less weekend.

Molly is so focused on her job that she doesn't notice a fellow teacher hitting on her. Vince talks Mike into his latest money-making scheme.

Mike and Carl get stuck working at the Renaissance Faire after their boss, Captain Murphy, gets dumped by Mike's mother.

Molly finds herself at a crossroads with her career and makes a huge decision to leave her teaching job to become a writer.

Sheldon's first day of college is derailed by his new philosophy teacher. Mary and Brenda live vicariously through Missy's first day of middle school.

Meemaw takes matters into her own hands when Sheldon's philosophy teacher, Professor Ericson, sends him into a tailspin.

Sheldon and his dad dine with President Hagemeyer and a university benefactor. Also, Dale and his ex-wife invite Meemaw to their son's wedding.

Sheldon's Meemaw visits and there's friction between her and Amy, which intensifies after the elderly woman blurts out a secret about Sheldon.

Sheldon and Amy celebrate Valentine's Day, Leonard and Penny feel the pangs of aging, and Howard and Bernadette find a surprise in their hot tub.

The gang learns Bernadette is pregnant and celebrates with karaoke. Meanwhile, Howard freaks out, convinced he must make more money for the baby.

Sheldon and the gang celebrate his birthday and he's surprised by a special guest.

Howard reconsiders entering into a legal partnership with Leonard and Sheldon, and the women offer Raj dating advice.

Sheldon shocks Amy with a startling revelation after she buys him a laptop. Raj throws Leonard and Howard under the bus when they lie to their wives.

Sheldon shares a secret about Leonard when the two go on a weekend trip with Penny and Amy; Raj goes all out with pregnancy gifts.

During a group get-together, a minor argument between Sheldon and Leonard turns into a heated debate, leaving the rest of the gang to choose sides.

Nearest Exit May Be Behind You. At Sheena's urging, Forrest agrees to go behind Molly's back, and Laura's confidence wavers when Birkan sees her body for the first time.

Georgie worries that he's leaving Connor out of his new project with Jim. Meanwhile, Mandy and Audrey struggle to decorate CeeCee's nursery.

Tensions rise when Georgie intrudes on Mandy's new sales gig. Meanwhile, Audrey's conflicted when Jim makes it a point not to coddle Connor.

Drag queen Tameru is covered in tiny clusters of cysts on his chest, arms and neck. He discovered his bumps over a decade ago and still doesn't know what they are.

Jason lost confidence and motivation due to the large growth on his neck. Shawnell has multiple mystery bumps on her head that have destroyed her self-esteem.

Chris fears he is failing his daughter as his weight gain begins to limit his mobility. Chris turns to his estranged mother to help get his life on track.

The sister of NBA star Stephen Curry hunts for her dream wedding dress. Plus, Cami Lee returns with her over-the-top mum in search of the perfect black dress.

Stephanie has a big budget and wants a show-stopper dress for her second marriage. Courtney Burson returns but has she finally made up her mind about a dress.

Sheldon visits CalTech for the first time. Meanwhile, Georgie is furious when Mary listens in on a phone call with his girlfriend.

Sheldon accuses Dr. Sturgis of plagiarism. Georgie has an awkward run-in with Veronica while on a date with his new girlfriend, Jana.

When George Sr. accidentally lands the school librarian in the hospital, the Cooper family look after her. Meemaw gives Georgie relationship advice.

When Sheldon learns the house next door is for sale, he looks for the perfect neighbours. Missy pitches against her boyfriend at the baseball game.

Sheldon has a scientific breakthrough at the dentist. Dale and Meemaw go to the casino. Georgie makes a mistake when he's left in charge of the store.

Sheldon discovers that Mary's been keeping a secret about his future. Also, Meemaw is furious when she learns that Dale fired Georgie.

Georgie worries that he's leaving Connor out of his new project with Jim. Meanwhile, Mandy and Audrey struggle to decorate CeeCee's nursery.

Tensions rise when Georgie intrudes on Mandy's new sales gig. Meanwhile, Audrey's conflicted when Jim makes it a point not to coddle Connor.

Sheldon and Raj go on an expedition that turns into a test of how long before they get under each other's skin. Leonard and Penny argue about money.

Penny's sales pitch leaves a doctor-client smitten and the guys help her deal with it, and Bernadette and Amy debate female scientists and sexuality.

Amy and Bernadette organise a prom to be held atop the guys' apartment complex, but Sheldon is leery of all the prom pomp, circumstance and romancing.

Leonard needs surgery for a deviated septum, and Sheldon feels an operation is too dangerous and that his roommate may not make it out alive.

Sheldon bids farewell to his Fun With Flags podcast. Leonard, Howard and Raj probe a late professor's research in search of some hidden significance.

Amy plans a Victorian dinner for Christmas Eve, while Raj, Leonard and Howard try to remove a pigeon that flew into the clean room at the university.

Raj awaits data from a space probe in which he was involved. Later, Leonard and Sheldon go dress shopping with Penny and Amy.

Sheldon becomes concerned that his cushy lifestyle is impacting his professional progress, so he asks the gang to make life more difficult for him.

An online troll rips Leonard and Sheldon's physics paper, and a girls' night out leads to Penny, Amy and Bernadette dishing about embarrassing events.

Howard gets unsettling news amidst the excitement of the comic book store reopening, and Penny doesn't practice what she preaches.

An experiment designed to make people fall in love piques Penny and Leonard's interest. Meanwhile, Leonard, Amy, Raj and Emily encounter a 'zombie.

There's trouble in paradise when Amy learns Sheldon signed up for a one-way mission to colonise Mars. Leonard makes an 'adult' purchase for Penny.

An electrical short thaws the last meal cooked by Mrs. Wolowitz, and Sheldon and Leonard's work is featured in a magazine, but only one gets credit.

Leonard and Sheldon consider dropping by George Lucas' Skywalker Ranch when a speaking engagement puts them nearby.

Sheldon and Amy reach a crossroad, a man claiming to be Wolowitz's half-brother shows up, and Penny and Leonard argue live on Wil Wheaton's podcast.

NASA asks Raj to craft a message for aliens in the event of contact, and Penny must choose between an audition or her job in pharmaceutical sales.

Wolowitz and Sheldon can't get a drone to fly, Leonard nearly misses giving a commencement address, and Raj pits his parents against each other.

Leonard and Sheldon's mothers come to town to celebrate their sons getting an award, but the opinionated women engage in an altercation over religion.

Leonard and Penny are pressured to set a wedding date by Sheldon, whose relationship with Amy has taken an interesting turn.

Penny has a problem dealing with Leonard's confession about having kissed another woman, while Sheldon is confused about Amy calling a time out.

After two top figure skaters' glittering rivalry gets them banned from the sport, they're forced to team up as a pair to get back into competition.

Dara Ó Briain introduces topical chat and hilarious games with guests Rhys James, Ahir Shah, Angela Barnes, Lou Sanders, Ed Byrne and Milton Jones.