Today on TV

Survivor: Nicaragua (7 p.m., Ch. 2): After a special visit from home, an alliance faces a difficult decision.

The Sing-Off (7 p.m., Ch. 5): The five remaining groups come together for a performance.

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Christmas With the Mormon Tabernacle Choir Featuring Natalie Cole and David McCullough (7 p.m., Ch. 7): 2009 Christmas concert.

Human Target (7 p.m., Ch. 13): Chance and the team try to help a man with retrograde amnesia.

Criminal Minds (8 p.m., Ch. 2): After helping a man get parole, Morgan regrets his decision when the man murders someone shortly after being released.

Hell's Kitchen (8 p.m., Ch. 13): The winner is chosen.

The Defenders (9 p.m., Ch. 2): Nick and Pete help a troubled former football player.