I killed Astarion when he puled a knife on me near the beach. There wasn't any dialogue option with Gandrel to say Astarion was dead.
I'll put this in spoilers for the sake of other people.
From what I understand, Voss is supposed to visit the camp some time after the creche? I'm in Act 2, just outside Moonrise Towers and haven't seen Voss since the Risen Road scene. Is something broken or am I missing something?
