During the week of Christmas, the NCIS team is working overtime searching for a prime suspect who turns out to have been dead for 17 years.

In this season six finale, all eight teams of families will return for a special reunion and a chance to weigh in one last time and show America how much weight they've lost since the beginning of their weight-loss journeys. The transformations will be profound, not just for the finalists, but also for the eliminated contestants who all continued to lose weight after they left the "Biggest Loser" ranch and returned home.

America's vote for the third finalist will also be revealed in the first part of the live finale, and then the eliminated player will weigh in with the other 12 eliminated contestants to compete for the $100,000 "at home" prize. Then it's the moment viewers have been waiting for, when one of the three finalists will be named this season's "Biggest Loser" and win the coveted grand prize of $250,000.

Hearing that Kip is performing with another band comes as a relief to Rita and Patty, who thought that he was cheating on Hallie. When Rita hears the songs the new band writes, it ignites a fire in her and she tries to write some tunes of her own. She has a hard time, but finds inspiration through Jay when he reminds her of letters she once wrote to him.

When Cheryl learns of Jim's plan to use their twins in a movie starring Steve Guttenberg to get some money for Christmas gifts, she refuses to let him do it, but Andy and Jim decide to go through with the plan anyway, only to have it backfire when the producers cut the kids hair to make them look alike.

Patrick Jane becomes very interested in a new case involving his former psychiatrist, who is the victim's wife and also the prime suspect.

A TV weatherman arrives at work bleeding from his side and the team tries to beat the clock to find out what that has to do with disappearance.

While representing a Nobel Prize winner destined to find the secret of cold fusion in the future, Eli undergoes a dangerous procedure with Chen's rival acupuncturist to see if he has a future with Ashley Cardiff. Meanwhile, Taylor learns more than she wants to about her father while representing him in his divorce.

Nate's childhood best friend seeks the help of Leverage Consulting & Associates in preventing the demolition of his church... by stealing a miracle.

At this very moment, celestial forces prowl the Universe and threaten man's very existence. They're asteroids and comets - and they've left their imprint on planet Earth, literally. Initially, they helped build planets through violent collisions. During this fiery bombardment period, they may have even seeded Earth with water and the building blocks for life. Since the turbulent formation of the solar system, these space rocks have continued to impact earth. Some have been so violent that they've led to mass extinctions events, including one that wiped out the dinosaur. What's more, radical new theories suggest that asteroid and comet dust harbor deadly viruses that may have triggered some of our worst pandemics. The possibility of future cosmic collisions remains a legitimate threat. Yet, despite their dangers, asteroids and comets may hold vital natural resources, which could actually preserve mankind.