A man takes over Cuddy's office and holds House, Thirteen, and several patients hostage. His demand? A diagnosis. The man forces Thirteen to act as a guinea pig for his treatments and House has to end the standoff before a SWAT team opens fire.

After a shocking reveal, the NCIS team if forced to prevent the heist of government secrets by using information from questionable sources.

The three remaining dancers have just one more chance to impress the judges, dancing their favorite routine of the series which will be scored y the judges. The judges scores will be added to the viewers votes in order to determine the season seven winner. Miley Cyrus and Alicia Keys make a musical appearance as well as Cloris Leachman in a special "Man on the Streets" segment and Jeff Ross hosts a roast of the three remaining contestants.

It's Thanksgiving week at the Biggest Loser ranch, and contestants will be celebrating with turkey, football and very special guests! First, NFL Super Bowl MVPs Jerry Rice and Steve Young stop by to put the contestants through NFL-style drills. Then celebrity chef Rocco DiSpirito helps the contestants make a healthy version of a traditional Thanksgiving dinner. Later, the contestants are really thankful when they receive special videos from home.

Hallie considers having sex with Kip after her friends constantly pressure her into doing so. When Rita finds out, she tries to advise Hallie in the right direction. Shannon invites Jay to Career Day at her school.

A trip to Sausalito, CA. and the Marine Mammal Center, to view the work of the veterinarians who treat injured ocean animals. Includes: how Dr. Frances Gulland, the clinic director of veterinary science, discovered a new neurological illness affecting the seas lions in California and harbor seal pups. Then, Gulland travels to Oahu, Hawaii, to work on Hawaiian monk seals, an endangered species. Also, a look how humans impacty the sea life.

Mike harvests hops in Yakima, W. Later, Mike takes some animal hides and converts them into paper in New York's Hudson Valley.

A Massive Dynamic employee leaps to his death after hallucinating a butterfly attack. Agent Scott proves useful in investigating the case, but a frustrated Olivia wants to remove him from her consciousness once and for all. Meanwhile, Peter deals with some enemies from his past.

CBI are called to a murder scene, when the State's witness in a drug trial and a girl are found dead in a motel room. Local police are quick to decide that Rick Carass, the drug dealer on trial, is behind the murder, but Patrick Jane thinks otherwise.

All of Benson and Stabler's work exposing the truth surrounding a false rape report may be lost when the victim recants her testimony, and Olivia's attempt to keep her safe exposes a deeper and deadlier secret.

Officers in the Barn investigate a woman's disappearance and the arrival of a large drug shipment; lives change forever.

The team's latest case sends Jack and Sam to Los Angeles in search for a man who went missing after his employee's funeral. Investigations in New York and California bring the team to a turn regarding this coast-to-coast mystery. Jack and Sam also rekindle their relationship.

According to the laws of physics we can never travel faster than the speed of light... or can we? Light speed allows us to see things instantly here on Earth, and shows us the entire history of the universe going back nearly 14 billion years. Learn all about light speed, the ultimate constant in the universe and discover ways scientists envision breaking the "light barrier" which may be the only way the star travel of our imaginations ever comes to reality.