I think my favorite clip was the one with Emma chasing Neal/Baelfire and finally seeing him face-to-face. There is such true shock on her face and she looks in pain–the man she thinks left her is back. Her son is related to the very man that she does not trust.
Regarding the dagger, I can totally see Rumpelstiltskin trusting Belle to help him hide the dagger–he loves and trusts her and knows that she will never betray him.
And seems that Captain Hook himself is going to be dumped by both Cora and Regina once they have what they want from him. He wants Rumpelstiltskin dead, whereas Cora and Regina want to control him for their own gain.