You need to have faith and patience. I loved tonight's episode (vs Business Trip).
*SPOILER*
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The parallel between Lester and Casey's arrest is brilliant. Imagine the two of them in the same holding cell down at the police station. "What are you arrested for?" Too funny.
It's also heart warming to see Casey's quick decision to eliminate Viper's team in order to protect his friends and daughter. As Sarah says, she is surrounded by friends and family, which applies to Casey too. Both hardcore spies now are closer than ever to having a normal life. Luckily Viper did say she was going to kill Casey, so it is technically self-defense, not murder.
That scene where Casey shoots everyone of Viper's team is simply awesome. He did it without using any Intercept. Very cool.
I am thoroughly enjoying this last season. Looking forward to see how the writers will end this great show.