Barney attempts to complete in a single day all the tasks from a list Ted made to prove the gang's not too old to do them.

Penny feels threatened when another sexy woman moves into the apartment building.

The FBI collaborates with other agencies as theories linking Starkwood and Sangala begin to emerge and thousands of lives are placed in jeopardy.

An unknown attacker causes Wolfe to cover up evidence of a crime to save a kidnapped child.

Earl conjures up a karmic plan to atone for all the wicked wrongs he did to an oddball "witch lady" (Betty White) when he was a youngster. But the golden girl proves to be certifiably unhinged, putting the Camden crew in a life-or...

Dell is dealing with the absence of his daughter since his ex moved for a new job. Cooper has to give devasting news to a cancer patient. Meanwhile Addison and Violet have to help a psych patient who lost her baby to go under surgery, and S...

Brennan and Booth investigate the death of a 16-year-old pregnant girl who was found buried in a pile of street salt. During their investigation they uncover a high school "pregnancy pact" between the victim and some of her fellow...

Angels get slaughtered by Lucifer's sword. Castiel and Uriel hold Alastair captive and ask Dean to use his newfound techniques in torture to take valuable information that can put an end to the murders. Dean learns some shocking facts ...

Tess Mercer invites Clark to accompany her to a press conference in New York City, but when an accident cripples the plane, Clark must choose between saving Tess and revealing his powers, or letting her die. Meanwhile, Davis tries to contro...

After his fellow surgeons try and fail to bring Derek back to work, Meredith must summon the strength to convince him. Meanwhile the hospital is abuzz as Mark attempts a rare face transplant surgery. Cristina, at last awarded her first solo...

Daniel and Wilhelmina make Modes issue based on sex to spice things up. Matt is hesitant to take the next step with Betty. Marc and Amanda provide Betty with a makeover.

Michael plans to celebrate his 15th anniversary at Dunder Mifflin with a party, but the new Vice President interferes. Jim's most recent prank on Dwight backfires.

A contestant is sent home; Randy Travis and Carrie Underwood perform.

Turk comes up with a new procedure to help a paralyzed teen after an inspiring episode of "SportsCenter." Meanwhile, the Janitor and Dr. Cox suffer romantic woes.

A writer is murdered after investigating an espionage case involving the Chinese government.

A vigilante rises from the trash and attempts to wipe out crime in the town of South Park.