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Other mistake: Van Helsing's ring fits his as a human, but in the climactic fight he turns to werewolf form and back and is still wearing it. He didn't have time to take it off and put it back on, so either one of his wolf fingers should be horribly, painfully cramped or the ring should have broken. No one insinuates that the ring has magical powers of any kind to prevent this.

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Audio problem: In the scene where the monster saves Anna by knocking down the last Bride, there is one shot where he turns to look at Anna framed in the window. His right leg support makes the hissing sound without any steam coming out of it.

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Continuity mistake: As Anna investigates the noise at night, her grip on the lantern keeps moving from horizontal in the front shots to vertical in the chase shots. (00:39:45)

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Continuity mistake: When Anna and Van Helsing are talking in the castle after the first vampire attack, the weapon Van Helsing is holding shifts from pointing over her shoulder to pointing across his face. (00:38:20)

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Continuity mistake: After Van Helsing arrives at the castle for the first time, when Anna is rearming herself, her hands shift from on her hips to at her sides between a front shot and a rear shot. (00:37:45)

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