The teams set off from their Pit Stop in eastern Montana and receive a clue telling them to fly to Montreal, Canada and then find the basement of the C.D.P. Capital Building in Montreal's underground city. Next they take part in a Detour --- Slide It (travel 22 miles and participate in the sport of curling) or Roll It (travel 23 miles and then roll four logs along a one-hundred foot course.) The Weavers and Linzes both opt for Slide It while the Bransens opt for Roll It and taxi/plane confusion causes great delays. Next they all travel 26 miles to the American Pavilion, built by Buckminster Fuller, where they climb a steep staircase and find a clue directing them to a door called Porte D. They make their way to the Olympic Park and pull departure times --- Linz - 5:50 A.M., Bransen - 5:45 A.M. and Weaver - 5:55 A.M., but the Weavers nearly quit.



After departing, the teams are flown by charters to a mystery desination --- Toronto, Canada and then travel to La Tour C.N. (the C.N. Tower) where they use binoculars to spot their next clue. A Detour, Ship or Shop requires them to either sail across Toronto Harbor and retrieve a nautical flag, or search among over one-hundred people for one whose foot fits a particular pair of shoes. The Linz and Weaver families opt for Ship while the Bransens choose Shop. The teams cross Niagara Falls to their final destination city and a jigsaw puzzle of Central and North America determines which family crosses the finish line first.

Brennan and her team are brought in to identify the body of a man found in a fallout shelter. While cutting into the bones of the man, Zack accidentally releases a deadly fungus, that causes the team to be quarantined over Christmas.

In this special 90-minute episode, contestants for the first time ever must pair up with a complete stranger. Along with the new parings, the winning team will now have the power to eliminate a team of their choice after the first stunt is completed. For the first task, teams will be on a speeding Sea-Doo boat as a helicopter lifts it out of the water. Then they must maneuver themselves underneath the boat. Next, the teams will be placed in a very small tank that is submerged in freezing cold water while digging through hundreds of pinching crabs. The race continues as the final teams are buried alive under tons of ice. This week's home invasion takes us to Providence, Rhode Island. A new twist to the show this season features host Joe Rogan traveling all over the country challenging people to "Fear Factor" stunts right in their own home for the chance to win a $5,000 Capital One credit card.

With Foreman as House's supervisor, the team must figure out if a woman who cried wolf too many times is really ill.

While filming a reality show on a Marine base, a supermodel dies and the NCIS team must discover who is the model's murderer. They discover a love triangle between the model and three other men, all suspects. Meanwhile, Jenny is disturbed by Gibbs when he doesn't want to attend an award ceremony in his honor.

When Cheryl and Dana's mother, Maggie, visits for the holidays, Jim and Cheryl compete with Ryan and Dana for her affection

Farik attends a meeting with cell leaders in Las Vegas as they finalize their plans for a date for their possible attack. Meanwhile, an Afghani boy comes to the warehouse in the hopes of becoming a jihadist himself. Also after meeting with Bobby's cousin, Gayle wonders if Darwyn could be a terrorist.

After kidnapping a witness and physically assaulting a priest, Brad is put on trial and enlists the help of Denny and Shirley to bail him out.



Meanwhile, Alan's hands are full with his secretary's financial troubles when her credit card company charges ridiculous interest rates putting her $50,000 in debt.

Sean and Christian are perform a mico-liposuction on Joy Kringle, a woman who acts as Mrs. Claus during the Christmas season. During her lipo they find a seventeen year old fetus inside her. Julia is not feeling well. A blood test performed by Sean reveals why. She is pregnant.

TONIGHT: Stephen Colbert welcomes the host of Costas Now and sports commentator, Bob Costas!