In episode 7 "The Aftermath" we found out that the ally traitor was in fact Hiroshi Sato. Asami seemed devistated! Or was it all an act? Could It be that Asami used this as a way to gain Korra's trust, and it's all a plot to take down some of the strongest benders from the inside? I don't think they would kill Korra, because then she would just be reborn into the next nation in the cycle, but they could certainly incapacitate her!
Comments and Criticism are welcome (as long as they're not too mean :)