Devon's plans for Chuck's bachelor party go awry while unexpected visitors crash Sarah's bachelorette party. Ellie discovers an important secret about her father's research. Join us for our discussion of the 22nd episode of the fourth season of Chuck, Chuck Versus Agent X, which originally aired on May 2nd, 2011. It was written by Phil Klemmer and Craig DiGregorio. It was directed by Robert Duncan McNeill.