A psychologist conducts unimaginable field experiments asking his human test subjects to make the impossible choice, but Detectives Nichols and Stevens are even more surprised by the man's inspiration.
Erica, Ryan, Father Jack and Hobbes learn Anna's sent a V shuttle filled with a deadly tracker team to find them, and must figure out how to stop the shuttle from landing. Meanwhile, Anna gives Tyler his invitation to the Live Aboard Program and Chad confronts Father Jack on what he knows about The Fifth Column.
Naomi and Jen are back to wreaking havoc in each others lives and just when Naomi thinks she has the upperhand, Jen slaps her back into reality. Teddy invites a nervous Silver to meet his father, Spence, for the second time and the meeting doesn't go quite as planned. Adrianna struggles to write a new song for Laurel and turns to Navid for support, forcing Navid to realize he still has feelings for her. Adrianna records a duet with Javier Luna, a famous young pop singer, who quickly wins her over with his charm. Annie confronts Harry and Debbie about their recent marital problems, resulting in a family discussion about their future.
Harry loses his cool with 3 swimmers that he's forced to rescue just seconds after warning them not to swim in a dangerous area. However, calling them "imbeciles" and "idiots" puts him in hot water.
A straight-laced propane salesman in Arlen, Texas tries to deal with the wacky antics of his family and friends, while also trying to keep his son in line.
Karen and Joe are holed up in the shop with the spectre of Jamie's revenge hanging over them. Joe is plotting their future away from Chatsworth, but Jamie has Connor in hiding and Karen isn't going anywhere without her son. Joe uses his dubious contacts to snatch Connor and drag his new family away to freedom, but little does he know he's carrying unwelcome baggage! When Maxine and Ian are mugged they viciously fight back, taking their attacker captive. At odds on what to do with their prisoner, the couple quickly realise their relationship is falling apart. Elsewhere, a dark cloud falls over the Maguire family when notorious gangster and psychopath Roscoe shows up. The brothers scatter for cover, leaving Mimi to suffer the intimidation along with a dose of extreme indigestion.
If ancient aliens visited Earth, what was their mission, and is there evidence that points to when they will return? Ancient Sumerian tablets describe an alien race, known as the Anunnaki, who came to Earth to mine for gold. Egyptian hieroglyphs depict hybrid creatures that were part man, part animal. Mysterious crop circles and unexplainable crystal skulls are thought to contain messages that man has yet to decipher. Strange evidence may exist in multiple cultures throughout history suggesting that aliens came here to explore, excavate raw materials, experiment on human beings, and even for pure conquest.
Best Food Ever: Sensational Sandwiches takes viewers on a cross-country tour of supreme American sandwiches. From the ultimate burger to the $100 cheesesteak, it's sure to leave viewers craving America's best local handheld creations.
Jake's plan to spend time with both Lady Rainicorn and Finn backfires.
Finn reflects on an upsetting experience in his past and pledges to help everyone in town, but this proves more difficult than imagined.
When the body of a model is found burning in an alley, Detectives Lupo and Bernard search for her killer.
Michael and Jeff have lived in their century-old house for 12 years. They love the historic neighborhood, but the love for their home has fizzled. Michael's ready to move out and downsize, but Jeff isn't sure he's ready to leave.
Coop insults the biggest donor of the hospital while Jackie revisits her affair with Eddie.
With only five hours left, the clock races toward the climactic series finale as Jack stops at absolutely nothing to avenge the emotional setback of losing his beloved partner Renee Walker. Meanwhile, the administration attempts to keep the historic and pivotal peace agreement on track as undermining forces surface.
When Ted and Barney jeopardize Robin's new relationship by professing their love for her, Robin realizes that she is finally over them. Meanwhile, after spending a weekend sleeping in twin beds, Marshall and Lily decide to get twin beds at home.
A high profile chef is found frozen to death in the kitchen of a hot New York restaurant. Complications ensue when Castle and the restaurant owner, an old high school girlfriend of Beckett's, share an attraction. Meanwhile, Beckett's relationship with Det. Demming continues to grow.
Cambodians eat some of the most unusual foods on the planet.
A seemingly perfect jewelry heist ends in murder and when crime scene evidence is stolen from the lab, and Delko returns to find the culprit.
Chuck and Sarah are assigned to train under Craig and Laura Turner, a married CIA team who, despite their impeccable record, hate one another. The Turners' stormy relationship forces Chuck and Sarah to wonder if they're doomed with the same fate. Meanwhile, Casey must train the newest member of the team Morgan.
The team takes on the case of an ailing groom-to-be who harbors undisclosed secrets from a previous relationship. As his fiancée tries to get answers to her many questions, a frustrated team winnows down the possibilities. Meanwhile, House spends extra-curricular time with his Princeton Plainsboro colleagues, performing a karaoke rendition of a Gladys Knight & The Pips classic with Foreman and Chase.