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Revealing mistake: When Velkan and the werewolf has dived off the cliff, we get a shot behind Anna where she is looking down the cliff. It cuts to a front shot of her and back behind her again and you can see it's actually the same scene played over again. You can easily see it on how her hair moves in the wind. (00:22:00)

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Revealing mistake: In the beginning when the Frankenstein Monster throws the equipment on Dracula you can see the outline where the wire used to drag Dracula backwards is attached. (00:04:10)

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Revealing mistake: At the windmill when the fire reaches the cases with Absinthe bottles the cases explode. Howeverm when the explosion occurs we can see sparks. I'm pretty sure an explosion like this wouldn't produce sparks, so it's obvious the explosion was ignited by some explosives. (00:05:35)

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Revealing mistake: At the ball when Carl pushes the man spitting fire so that he spits fire on Dracula, you can see Dracula grabbing him and throwing him away. Then it cuts to Van Helsing gliding down on a rope grabbing Anna. When we get to the scene where the camera view comes flying against Anna we can see, on the left, Dracula's shadow when he is throwing the man. As the previous scene where Dracula threw away the man was most likely done with CGI, they forgot to add the man's shadow in this scene. Also in the following scene you can see Dracula throwing, but this time they forgot to add the man in. (01:23:35)

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Revealing mistake: When Dr. Frankenstein is holding the sword against Dracula, you can see its shadow on the wall to his left. However, when Dracula impales himself with the sword you can see the sword's shadow going through Dracula's shadow at the same time. Whatever the film makers have done, they have forgotten to remove the sword's shadow. (00:03:30)

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Revealing mistake: When the undertaker is about to hit Van Helsing with the shovel, we can see the shovel stop in the air before Van Helsing grabs it. (00:44:50)

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