Westmoreland wants Michael to speed up the planned escape, and gets Bellick one step closer to unraveling it. Michael has to decide whether to involve Sara in the breakout plan. Tweener's devotion is put to a test. Veronica finds out that her ally unexpectedly has a connection to an inmate serving time at Fox River.

Stephen Colbert welcomes the author of "American Gospel: God, the Founding Fathers, and the Making of a Nation", Jon Meacham!

Monologue/Opening: Graig comments on the big local LA music festival over the weekend. He also compares today's music festivals to the ones in decades gone by (Woodstock), mentioning that pretty much the same bands are still performing (Eagles?). Later, Graig welcomes America's foremost energy expert, Henry Winkler. Guests: Actor Neil Patrick Harris ("How I Met Your Mother") reveals he's obsessed with reality shows like the "The Amazing Race"; actress Parminder Nagra ("ER"); Later, the Bellrays perform.