This one is pretty close to the end of the movie. After Prince Einen has captured Draco, Einen's mother kills the guard that is watching the dragon and begins talking to him. Draco (and her) decides that she should kill the dragon so that Einen will die. She goes to stab him with the spear and Einen catches her and rips it from her hand. The mother tells him she shouldn't have taken him to Draco to be saved in the first place and then walks off. Ok, HERE IS WHERE you have to look very carefully. You see the mother walk into a dark doorway and she disappears. Well, Einen follows her into this doorway to kill her with the spear he took from her. BUT, if you look carefully, you can see the back end of the spear still disappearing into the doorway as the sound of him swinging it and stabbing her is going. It's SOOO noticeable! The sound of the spear going at the mother makes it sound like he used a huge baseball style swing to stab her, but you can clearly see the light catching the back part of the spear, and it doesn't move any differently than it does when he's walking! It's sorta hard to see because it's fading into the darkness, but it IS there and very noticeable. So who stabbed her? An angry member of the kitchen staff?