Chuck season four started nicely and follwed the story of Chuck's mother and Chuck and Sarah's relation until episode 4, episode 5; Chuck vs the chouch lock is a change of direction and intensity. It gave us a deep view into Casey's character and past. It starts off in Iran where Casey led a team to do a mission there and his team saw piles of gold and his disapproved to share them so they turned against him but he kicked their butts real hard. Then the story connects with Chuck's mom and how they areminvolved, so the mission is to lure them and the only way is to Fake Casey's death!
Overall, the episode is great and funny and ends very well.
Hope Chuck stays on for more seasons and gets the appreciation it deserves.