Shooting Star 4x18 [SPOILER ALERT]

Wow!!! Great work from the cast and crew of this new episode of GLEE. It was really surprising and amazing!!! In this epsiode, the writers decided to talk about one of the latest shocking events in USA, school shooting!!! Yeah, gleeks that haven't seen the episode yet (which I think it is very strange), but don't worry nobody got hurt. A very special episode, with a great work from the actors who were really great.  It seemed as we were in the choi room whit everybody else. Really freaking scary!!! They ddidn't even need to show the characters of the set of New York and for the first time in this season it didn't even matter what they were doing in The Big Apple!!! Great Work!!! Congratulations!!! The songs were also great even being only 3. (I think it is the lowest number of songs in an episode, isn't it???). An amazing and very surprising ending too. No one would ever guess.
Just really want to know who Katie really is??? Any suggestion???

And what do you think it will happen with Sue??? Has she left the school forever??? Or will she return???

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