COMING UP ON "ROCK CENTER WITH BRIAN WILLIAMS" - MONDAY, NOVEMBER 21 AT 10P/9C

On the heels of his bombshell interview with Jerry Sandusky last week, Bob Costas joins Brian Williams live to discuss the nation's reaction to the Penn State sexual abuse scandal and the latest developments.

Then, high health cost for cheap food on your table. Natalie Morales goes to the isolated Miskito Coast in Honduras where lobster diving is a way of life - yet it has devastating effects on those who rely on the profession for their income.

And, does Rahm Emanuel have a sensitive side? Harry Smith interviews Chicago's Mayor Rahm Emanuel in his first in-depth profile. The famously foul-mouthed political operative is making big changes and big news.

Guest: Betty White will be in studio with Brian Williams.

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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