Just letting you all know I went to see this tonight, it was garbage. Worst of the 4 and definitely the least realistic, even though 1, 2 and 3 all had parts which had the whole audience in laughter, this was worse. If you're extremely jumpy and you like being caught unaware, then knock yourself out. Otherwise, spend your money elsewhere because it's not worth it IMO.
They're releasing these way too close together and the whole thing is just endless nothingness. Yes, endless nothingness. The story line died after 2.