Chuck and Sarah suspect Casey is carrying out private missions. Chuck fears the CIA’s new operatives will render him obsolete. Morgan settles in with a new roommate. Awesome becomes uncomfortable…

Chuck and Sarah’s romantic mission is canceled with the arrival of Hugo Panzer and Heather Chandler. But Chuck grows more interested when the manipulative Heather claims to know a secret…

When Shawn and Gus join Gus’ new girlfriend on a rafting trip, a member of the group goes overboard, but Shawn quickly realizes it was no accident.

In an attempt to deliver a devastating final slap to Barney, Marshall explains how he mastered the Slap of A Million Exploding Suns.

When Barney debates giving up wearing suits in order to land a hot bartender, his conflicted feelings lead to an amazingly awesome musical number. Meanwhile, Ted gets one step closer…