Continuity mistake: When the guard tells Ella to "freeze," she freezes with her mouth closed, yet in the next shot, before she is given another command, her mouth is open. Then, in the next shot, you can see her facial expression has changed slightly. Since she was told to freeze, and hasn't been given another command yet, she should be physically unable to move in any way.
Continuity mistake: In the scene where Edgar is giving Ella commands, when he sits in the chair and says "I killed my own brother", his left hand is on the arm of the chair and his right hand is on the book on the table. However, in the immediately following shot, Edgar's hands are suddenly clasped in front of him.