The contestants must compete in a medically themed challenge. Simon and Virginia confront their relationship status.
Jeff organizes a lovely holiday gathering at his apartment, but Annie secretly invites Professor Cornwallis to get in his good graces.
Leslie works to get rid of outdated laws from the original town charter. April and Ron receive management training from Chris. Ben finds himself in a bidding war against Ann to win a present for Leslie.
When Leslie finds out Jerry is retiring, she struggles with the proper way to commemorate the occasion. Chris and Ann prepare to have a baby together. Tom worries he will become the office punching bag once Jerry leaves.
As the revived Reshiram quickly falls under Ghetsis' control, Ash and friends try to develop a strategy to stop Team Plasma. Looker convinces Team Rocket to help in the fight against the villains, while Ash and Pikachu aim to destroy the controlling machine, and N hopes to pacify the enraged Reshiram before it destroys the world in a righteous fury - akin to when it burned down Team Plasma's castle in the past.
Maksim Gelman discusses the four murders he committed in New York City in 2011.
Claims of aggressive paranormal activity made by visitors to Fort Wayne in Detroit are investigated by John and his team during a trip to the historic site.
Phyllis and Patty aren't just identical twins, they are identical hoarders as well.
Gerry tries to convince Bobbi to give him a senior boys basketball team next season. Robert learns that his year end evaluation came with one complaint.
Earnest has the guys frantic that he might try to kill himself. Brenda refuses to make it easy for Dmitri to leave her. Nandi tries to understand how she feels about Spencer. Aspens receives damning information about Chandler.
Dallas helps George tell Tessa that he has sold their house; when Dalia tries to make Tessa miserable, Tessa seeks revenge.
Sheila talks Mr. Wolfe into throwing a chastity ball at the high school; George buys Dallas her dream house.
John copes with the aftermath of his kidnapping. Sammy closes in on the real robbers. Lydia continues to pursue John’s kidnappers and becomes more intimate with Russell.
The detectives investigate the murder of a wealthy man whose double life left him vulnerable to exploitation. Away from work, Rachel's recent moment of indiscretion threatens to come back to haunt her when a confused Sean takes a phone call from her one-night stand, and after Ade is pushed into living with his girlfriend on a permanent basis, Janet asks her mother to move in.
The family celebrate their favorite holiday - the Oscars. Polly invites an old classmate over for the event and tries to impress him. Meanwhile, Max thinks that Elaine has too close a relationship with her brother, and tensions explode at the party.
A series of awkward interventions. A rocket scientist makes one too many bad jokes, a zombie actor moonlights as a cleaner, a father has trouble delivering the birds and the bees talk with his son, and an astronaut loses his internet privileges.
The presenters seek out the ideal locations to enjoy their personal passions. Nick Crane heads to the Inner Hebrides to attempt a mountaineering challenge on the Isle of Skye, and reveals how Thomas Cook was inspired in the mid-19th century to create his famous package tours by the steamships criss-crossing Scottish waters. Avid knitter Ruth Goodman gets some tips for completing a complex fisherman's jumper by visiting Polperro in Cornwall, learning how people's livelihoods 150 years ago depended on their skills at making workwear to order. Poet Ian McMillan looks for creative ideas in the Cornish seaside resort of St Ives and explores the life and work of self-taught artist Alfred Wallis, and Tessa Dunlop explores the glamorous history of British lidos - public outdoor swimming pools that sprang up around the UK in the 1930s.
The new roommate is drawn to Jordan; Marlon and Nia flirt, making the roommates believe there is another couple in their midst.
How did life storm the beaches and dominate planet Earth? Ancient Australian fossils offer clues in "Life Explodes." Half a billion years ago, Australia was still part of the super-continent Gondwana. The oceans were teeming with weird and wonderful animals, but the world above the waves remained an almost lifeless wasteland. All that was about to change, though. Host Richard Smith introduces Earth's forgotten pioneers: the scuttling arthropod armies that invaded the shores and the waves of green revolutionaries whose battle for the light pushed plant life across the face of a barren continent. Evolution continued underwater as well, with armor-plated fish experimenting with teeth, jaws, sex, and lungs. NOVA's prehistoric adventure continues with four-legged animals walking onto dry land—and the planet poised for disaster.