I think the shadow thing is the same thing as with Regina, Cora, and Rumble ripping the hearts out.
Once the shadows are returned even PP’s I think things will change to the good.
I don’t believe PP is the one who’s in charge of everything. I believe there must be someone above him.
I thought this from the beginning because I thought it was strange to have the dagger just setting around at the Duke’s palace so anyone can get it. I am thinking the Duke is behind this whole thing.