In Barcelona, the models' nerves are wearing thin. After a Flamenco photo shoot challenge, one girl breaks down in tears when her dancing is criticized. In unlikely pairs, the models float in a pool of icy water as Tyra directs their photo shoot, but one girl must bow out of the shoot early as hypothermia begins to set in.

While investigating the death of a film student who was working on a documentary about the legend of a headless witch, who haunted woods in the 1700's, Brennan develops a strong bond with the victim's brother.

The BAU is called to investigate the serial murders of prostitutes in Washington, D.C., and suspect a teenager is guilty of the crimes. The case becomes complicated when a congresswoman about to make a speech to praise the city's lower crime rate threatens to take away the case if Hotch calls a press conference to discuss it.

A giant goat knocks over the Rockefeller Center Christmas Tree; Andy Kindler visits the US Marshals Training Academy in Georgia; in his first Late Show appearance in six years, Richard Simmons introduces a food steamer he invented (which blows up in his face); Ciara performs "Promise."

Just when you think Adam and Jamie have tested every gun legend in history, they come up with three more myths. In an urban shootout, could a criminal's bullet have hit and then jammed the empty chamber of a policeman's revolver? Saving Private Ryan might have been based on fact but what about the scene where one sniper kills another by shooting straight down the enemy's gun scope? And assuming two antique bullets once hit midair in a Civil War battle, is it even remotely possible those two bullets fused together? In the meantime, Kari, Grant and Tori go to great lengths to see whether humankind's first and simplest tool — the hammer — could be far more dangerous than you think

The players learn how to cook a healthy Thanksgiving dinner. Meanwhile, their challenge this week will involve the players putting on all the weight they've lost since they arrived at the ranch.

Tonight Stephen welcomes screenwriter and author of "I Feel Bad About My Neck: And Other Thoughts on Being a Woman", Nora Ephron.