Ep 6 (spoilers)
I'm still going to finish this season. But it annoyed me how James, when speaking with Donald, figured out his mother Ellen could be possessed by Assassin (the bad visitor, who had previously possessed Olsen), and he still decides to confront her alone.
Shows like Lost, From, and Teacup, would all benefit from the characters realizing that withholding crucial info from the group avoids many bad decisions & outcomes.