Anna Valerious: You ask a lot of questions.
Van Helsing: Normally I only ask two."What are we dealing with?" and "How do I kill it?"
Aleera: You can't go until I say you can go. And, I say you can go when you're dead!
Carl: Why does it smell like wet dog in here?
Carl: Actually, I'm just a friar. I can swear as much as I want. Dammit!
Answer: During their conversation Dracula is able to move around the room without Viktor noticing it. Then Dracula is standing on top of the fireplace behind Viktor, that's why he turns his head the first time. When Dracula suddenly slams the chest Viktor is surprised to see Dracula suddenly standing in front of him so he instinctively turn his head to look at the fireplace to believe his own eyes.
Mortug