Attack on Titan: Shingeki no Kyojin

[KrayZ33]

Reiner and Bertholdt were never suspected to be titans in episode 2 or 3... thats complete BS.

And what's bad story telling about there being a possibility that some characters have a special background story? I don't get it.

Is Bourne identity a bad story because people could be double agents or agents in the first place?

It's just part of the mystery that involves the titans and the "titan-walkers". It was relatively clear that Annie didn't work alone and it became even clearer now, with the appearance of the beast titan that there is more than just a mindless horde of titans that want to eat humanity.