A new patient claiming to be Anne Frank exposes Arden's past. Kit learns why Grace was admitted to Briarcliff.

After Detective Lance arrests Oliver for murder, Oliver tells Moira the only lawyer he’ll allow to represent him is Laurel. Laurel takes the case which puts her at odds with her father. Oliver offers to take a polygraph in front Detective Lance but things get tense when Lance asks him if anyone else was on the island with him. Oliver flashes back to when he got his first scar, courtesy of Deathstroke.

Casey confronts Detective Voight about his harassing tactics, vowing never to back down, and ends up paying the price for his decision. Dawson faces disciplinary action for her on-the-job conduct. Meanwhile, Severide finds his arm failing him during a rescue at a construction accident, and reaches out to Anna, an old flame and pharmaceutical rep, hoping she might be able to help alleviate his injury problems.

When prostitutes in Miami are discovered murdered in a similar style to local animals found dead there, the BAU must work fast to find an unsub whose confidence is quickly escalating. Also, Morgan tries to increase Reid's athletic skills by convincing him to join the bureau softball team.

Things get personal when D.B. Russell is drawn into the investigation of the death of his son's basketball coach.

Sketches include: a guy chasing his girlfriend to the ends of the Earth; LMFAO literally cannot stop partying.

News anchor Brian Williams; musical guest Ne-Yo

Cameron watches Alex and Luke while Phil, Claire and Mitchell deal with Haley’s arrest. Jay tries to cut short a surprise visit from ex-wife Dede (Shelley Long), so she doesn’t learn about Gloria’s pregnancy.

Rayna thinks about moving on when Deacon sets boundaries in their relationship; as Juliette struggles with her mother's addictions, Deacon is reminded of difficult moments in his past; tension between Gunnar and Avery puts pressure on Scarlet.

Eric Cartman is hiding something in his bedroom that could change the entire outcome of the Presidential election.

Sam and Dean investigate a murder and find Garth is already on the case. Dean is not happy to learn that Garth has assumed Bobby’s duties, but Garth points out that both Sam and Dean have been missing for the last year and someone needed to do it. They guys discover an "avenging ghost" is responsible for the murders and they need to find the source before the killings starts again.

Liberals and conservatives taint the election, Bill O'Reilly blames Romney's loss on non-whites, wind turbines affect mental health, and Doris Kearns Goodwin recites history.

From "Go On", actor Matthew Perry; from "The Man with the Iron Fists", actor and rapper RZA.

Frankie does not make a good impression on the first day of dental assistant school; Mike and Frankie ask Axl to get a tutor and improve his grades; Sue and Brick try to pawn an item they found in an old safe.

Artists from CeeLo and Christina's teams sing for their shot at advancing.

Season 10 opens with 21 chefs battling for culinary honors in Seattle.