When a man dressed as Santa Claus blows himself up during a botched bank robbery, Brennan and Booth work to identify the bomber and determine his motives. Meanwhile, Brennan makes plans to spend Christmas in El Salvador, but her father convinces her to spend the holidays with him and Margaret Whitesell, a newly discovered distant relative.

Shirley does the preparations for an upcoming holiday party. Jeff goes up against a school bully after being challenged to a fight.

When Nick, Greg and Hodges take Henry to celebrate his birthday at a biker bar, they uncover a double homicide and find several suspects still at the bar who may be the murderers.

After being banned for 10 years from a local drinking competition appropriately named "Flipadelphia," the gang tries to reignite their old rivalry with another local bar. Finding that they are in need of some serious practice, the guys head to Dennis' old fraternity house at the University of Pennsylvania to get their game up to speed while Dee hones her skills on her own. Frank wears skinny pants.

Episode info coming soon ..

Leslie designs the Pawnee Winter Wonderland Festival, but has to hide from the press when a meeting with a disgraced Councilman lands her in the middle of a sex scandal. Meanwhile, Ron offers to cover for Leslie for the day, and quickly discovers how much work she really does.

Comedy quiz show. Stephen Fry gently guides guests Liza Tarbuck, Phill Jupitus, Sean Lock and Alan Davies through the world of games.

Stephen details Russia's battle plan for Afghanistan, tries out for the U.S. bobsled team and puts words in Lara Logan's mouth.

Episode info coming soon ..

The guys try to hide the Shiva Trophy from their high school classmate - the actual Shiva. Taco gets a "real person job at a Volkswagen dealership.

A jewel heist during a charity event leaves a man lingering near death but the investigation takes a bizare turn when the chief suspect winds up dead.

Michael gets upset when Jim promises Phyllis that she can be the office Santa, but the office Christmas party may be overshadowed by some bad news from David Wallace.