COMING UP ON "ROCK CENTER WITH BRIAN WILLIAMS" - MONDAY, DECEMBER 19 AT 10P/9C

Kate Snow reports on a scandal that has shocked Spanish society�allegations that over four decades, organized networks stole newborn babies from their mothers and sold them to other families. She meets one mother and daughter recently reunited, and another family still engaged in a desperate search for their lost son.

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What's the best way to combat 'Islamophobia' in a post-9/11 world? "Humor" probably wasn't your first answer, but perhaps it should have been. Harry Smith goes on tour in the Deep South with a comedy troupe of American Muslims and sees them try to change attitudes, one laugh at a time. An original take on what it means - and feels like - to be both Muslim and American.

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It was opening day of baseball season at Dodger Stadium - they were playing their longtime rivals, the San Francisco Giants. As 56,000 fans celebrated America's pastime - fan loyalty went terribly wrong. Dr. Nancy Snyderman reports on the prognosis for Bryan Stow, who was beaten by 2 Dodger fans just after the game...apparently simply because he was wearing a Giants jersey. Today he remains in a long term rehabilitation center, and while his speech and mobility may improve, doctors believe he will be permanently disabled. Was it an isolated incident, or part of an epidemic of fan violence in professional sports?

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Steve Martin joins Brian Williams in studio.

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Chip Davis is perhaps the most popular musician you've never heard of. His group Mannheim Steamroller is the top holiday artist of all time, selling more than 27 million records. Now in its 26th holiday season Mannheim Steamroller is performing in 84 cities. Willie Geist reports.

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David Corvo is the senior executive producer, Rome Hartman is the executive producer and Brian Williams is the anchor and managing editor of "Rock Center with Brian Williams" (Mondays at 10p/9C). Follow us at RockCenterNBC.com, facebook.com/rockcenterNBC and @rockcenterNBC.