The Monsignor confronts the Devil. Dr. Arden’s experiments reach a shocking conclusion. Dr. Thredson facilitates a surprising reunion for Kit.

Eaten up by his guilt over Flaco’s death in the fire, Cruz goes to Casey to confess. While Shay recovers from a head injury sustained in the ambulance crash, Severide asks Dawson for her help in dealing with his own injury. Casey is caught in the middle of a family conflict between his mother and sister. Elsewhere, Herrmann finds a business deal hard to stomach.

The newest writers for "Cougar Town" run some ideas by Ian Gomez.

Comic Kathy Griffin; from "Zero Dark Thirty", actor Chris Pratt; Big Boi performs.

Holiday celebrations are interrupted when Detective Tutuola's ex-brother-in-law is arrested for attacking a priest; during the investigation, a church scandal is uncovered.

"Nashville: The Whole Story" features clips that tell the intersecting tales of music industry greats Rayna James and Juliette Barnes -- one a legend, another on the rise -- as they make their own ways in life, love and in their careers. Rayna's lead guitarist, Deacon, shares a tortured past with her, but has also opened his heart and his arms to Juliette, as Rayna struggles to save her marriage to Teddy, who's running for Mayor. The election pits Teddy against longtime family friend Coleman Carlisle and quickly turns ugly, thanks to the machinations of Rayna's plotting father, Lamar. Meanwhile struggling artist Avery, budding singer/songwriter Scarlett and soulful troubadour Gunnar form a love triangle that produces not only incredible passion and moving but heartfelt music.

The contestants' knife skills are put to the test. Later, memorable moments in "Top Chef" history are recalled and celebrated. Judges include Wolfgang Puck, Wylie Dufresne, Jonathan Waxman and Chris Cosentino.