Liz works to prove to Tracy that women are funny while simultaneously attempting to head off a meltdown from Jenna after some negative publicity. Jack tries out an unconventional dating strategy.

When Wolowitz returns from space, he doesn't get the hero's welcome he expected. Meanwhile, Game Night turns into a battle of the sexes.

When a serial killer abducts a nurse, the team turns to his brother for help.

Elena tries to cope with the extreme highs and lows that are part of becoming a vampire, and Stefan and Damon almost come to blows while arguing about what is best for her. Damon decides to help Elena in his own way and asks her not to tell Stefan. A stranger, Connor Jordan, arrives in town and begins questioning Sheriff Forbes and Mayor Lockwood. Connor's actions quickly convince Stefan that they are dealing with a dangerous vampire hunter. Jeremy and Matt are surprised to see a girl they used to know, April,, has returned to town and is enrolling at Mystic Falls High. At a town gathering, Elena comes close to losing control until Caroline steps in to help her. Finally, Damon confides his feelings to an unexpected friend.

Even as Marcus and Sam learn that they have been charged with treason against the United States, a greater threat within their own crew is brewing. Meanwhile, an old friend of Sam's, Paul Wells, pays Christine a visit and tries to ease her fears about her husband.

A friend's daughter comes to visit Walden and makes him feel old when she tries to set him up with her mom.

Reagan and Chris realize it has been months since their last night out and decide to paint the town with Ava and Jerry. Meanwhile, on Chris' advice Scott tries his hand at dating again.

The survivors from the crash are asked to make an almost impossible decision that will affect the rest of their lives. Meanwhile, tension grows between Jackson and April after they're forced to work together, and Alex tries to restrain himself with one of the interns.

The staffers hit the road in a rented bus when the building is deemed unsafe. Meanwhile, Nellie reaches out to Andy for help in adopting a baby, and Jim uses pie to spread cheer to Pam.

Reese returns to the field to protect an ambassador's daughter who is threatened by mysterious assailants. Meanwhile, Carter meets Agent Snow, who is also looking into Corwin's death.

The three finalists have to present their collections on Mercedes Benz Fashion Week to the audience and to the judges. Jennifer Hudson is the guest judge.

When a rising young ballerina mysteriously falls to her death, Vincent senses that the understudy Victoria is hiding information about the dancer's murder. Cat and Tess discover that the victim tried to file a police report for an assault. Meanwhile, Cat seeks out Vincent's help to decipher a medical paper found in her mother's belongings, and J.T. worries that Cat's visits to the warehouse loft leave Vincent vulnerable to discovery by Muirfield's agents. Catherine encourages Vincent to help her investigate deeper into the Muirfield project, but when Vincent refuses, Cat investigates on her own, until her computer is wiped clean by a malicious virus. Tess tries her hand at dating again, but soon discovers that she's unknowingly involved with a married man. Heather moves out of Cat's apartment after growing uncomfortable with her sister's quest for more answers about their mother's death.

An STD outbreak amongst Pawnee seniors prompts Leslie to conduct a sex education class. Meanwhile, Ron helps Tom adjust to life without technology after his gadgets are taken away, and Ben and April meet Congressman Murray for the first time.

With the garbage men of Philadelphia on strike, Frank concocts a plan to undercut the union and get the contract to collect the city's trash. But when The Gang's elaborate plan starts to fall apart, everyone will get their hands a little dirtier than expected.

Jenni's injury is examined; Mike considers taking his relationship with Paula to the next level.

A paranoid government official drops a bombshell on Pope & Associates and even Olivia is caught off-guard with how high up this Scandal goes. Back at the office, unresolved questions about Quinn's background create tension amongst the associates. Meanwhile, despite Cyrus' best efforts to keep a lovesick President under control, things still manage to heat up between Fitz and Olivia when Olivia's old flame returns.

"The Balloon Man" who leaves a signature batch of balloons at his crime scenes, is on the loose. Sherlock and Watson, called in to consult on a child abduction case, set out to find the serial killer. But will Sherlock's signature bluntness be of any use?

Kevin and Jenny argue over whether or not their son will be circumcised and everyone takes sides - including Shiva.

President Barack Obama

Jeff Goldblum, Maggie Q

The Killers

The events of a full year at the hospital are chronicled.

Trent has to kill his father.

Kelsey Grammer, Casey Wilson, Nina Conti

Gavin ends up realising just how much he wants Julie back after a scheduled fire drill goes wrong. Colin becomes a changed man follwing being dumped by Lisa.

Jo Brand hosts and Richard Bacon is amongst the panelists.

Flustered by what happened from the night before, Gemma is baking cakes for the twins' school function. She attempts to convince Billy that there's nothing romantic between them. Gemma, Alfie and Billy show up at the school totally unaware of the chemistry between his best friend and his mother. Tom unwittingly shares his feelings for Gemma with Billy. Gemma's efforts to focus on her new romance with Tom are end up being questioned after she overhears Billy helping daughter Jess out.

Fresh Meat and Bad Education star Jack Whitehall makes his debut on the obscure general knowledge quiz, joining regular panelist Alan Davies and comedians Jimmy Carr and Cal Wilson to answer Stephen Fry's fiendish questions about joints.

Graham is joined on the show by Arnold Schwarzenegger, Ben Affleck, Miranda Hart, Ronnie Corbett and Usher.

Starscream once again offers up his allegiance to Megatron, much to the displeasure of Dreadwing.

Occupation arrests an innocent program falsely accused of being The Renegade.