Seating order: Wayne, Jeff, Colin, Ryan.

A mysterious man who claims to be a product of Lex's latest project plants a bomb on Chloe and uses her to force Lois to get the truth on 33.1 from Lex.

The final five is revealed and upon returning to camp after Tribal Council, Denise wonders if sticking with her original alliance of Courtney, Todd and Amanda was a mistake. The next morning Peih-Gee is the remaining tribe member of Zhan Hu and she feels she is the outsider.



At the Reward Challenge, Denise wins a lunch and a night-stay at the Great Wall of China with Courtney and Todd. Denise's choice does not go over well with Peih-Gee, but it allows her and Amanda to converse with each other while the others are away.



After returning from the reward Peih-Gee and Amanda cannot believe Todd and Courtney complain about the food they had. With Todd angering Amanda, she thinks about possibly voting him off depending on the results of the Immunity Challenge. After the challenge, Peih-Gee wants Todd out, but Denise would prefer him to stay thinking she has a better chance against him in the finals. At Tribal Council, the alliance of Courtney, Todd, Amanda and Denise hold strong.

The world of illegal dog fighting is explored by Grissom and the rest of the team when they take on the case of a wealthy socialite who was murdered. Meanwhile, Warrick struggles to clear his name in the recent exotic dancer murder case.

Logan and Falacci investigate the execution-style murder of three young college freshmen.

It's Christmas and Sam and Dean look into the murders of people who were pulled through their chimney. While investigating, Sam learns that they are dealing with an Anti-Santa, a demon that has roots in pagan lore. When Dean wants to have an old-fashioned Christmas, Sam has flashbacks to a Christmas where he waited for his father to come home with one special gift.

The cast and crew of TGS celebrates their annual holiday party, and Liz gets a visit from her family.

A child prodigy turned store Santa vanishes and the team wonders if he had criminal connections.

Justin does not let Alex into an R-Rated movie, so she uses magic to get in. However, she may accidentally get into the film, too.

The popular news quiz returns, with team captains Paul Merton and Ian Hislop, guest host Richard Madeley, and guest panellists Lauren Laverne and Stephen K Amos.

This series' final episode contains unseen footage of the last series.