Mark Berry

Sheldon goes to Vegas and does everything he can to win three hundred million dollars for science. Meanwhile, Penny and Bernadette take Amy shopping for wedding dresses, but her terribly choice entangles them in a web of lies.

Leslie (Amy Poehler) and Ben (Adam Scott) both face new challenges on the first day of new jobs. Donna (Retta), April (Aubrey Plaza) and Andy (Chris Pratt) play a prank on Ben, while Tom (Aziz Ansari) prepares for a big presentation. Meanwhile Ann (Rashida Jones) and Chris (Rob Lowe) contemplate taking a big leap together.

Jake and Amy’s ongoing bet about who can make more arrests comes to a close. Meanwhile, Charles receives the Medal of Valor for getting shot in the line of duty, but the pain medication he is taking causes him to reveal his true opinions about his colleagues.

Captain Holt receives death threats and Jake is put in charge of his security, a job he enjoys and abuses as much as he can. Meanwhile, Amy attempts to get the precinct to take a Christmas photo for Holt, but a lack of enthusiasm and Rosa's refusal to smile defeats her efforts. Also, Sergeant Terry Jeffords gets his mojo back.

The BAU travels to Albuquerque to investigate the case of a serial killer who impregnates young women and murders them after they have given birth.