Revealing: When Dracula drops Mary at the end of the film, she hits the sidewalk and it "gives".

Plot hole: In the makeshift morgue when Simon and Matthew first fight the vampires, Solina is shot and pinned to the wall with a large silver nail and remains calm and unaffected. However, moments later Marcus is fighting with Simon and grabs one of same kind of nails but must drop it when it burns his hands. It makes no sense that Solina had no adverse reaction to the nails at all when Marcus reacted so violently.

Deliberate "mistake": During the ceiling sex scene, Lucy's hair lays flat against the ceiling with no effects of gravity while Dracula's hair hangs towards the floor fully under the proper force of gravity.

Continuity: When Mary discovers her father's body under Lucy's bed he has a new wound above his right eye, but the much larger wound he received earlier in the evening fighting Solina and Trick is now missing.

Continuity: When Mary turns on the lightswitch in Lucy's room and shorts out all the lights note the phone that is off the hook at the foot of the bed. The receiver is far enough away from the base that the cord is extended in a "U" shape, however, when the shot moves to close up on the phone the receiver is now close to the base and the cord is now twisted on itself.

Continuity: When Nightshade cuts his thumb on the coffin he sucks the blood off, sits down then shakes his fist in anger splattering some on the coffin. The amount shown in the next shot, being "consumed" by the coffin is completely out of proportion to what could have splattered from that cut if it was 10 times as severe.

Continuity: When Marcus brings his hand off the fingerprint scanner you can see he is wearing a film allowing him to use someone else's fingerprints. However, note the tip of this index finger, the print is peeled back nearly to the first knuckle and the scan would have certainly failed.

Continuity: When Valerie hides from Dracula in the TV van the blood trail from the bite wound on her neck changes dramatically between shots. It goes from being a single trail of blood, to a two prong trail, to a long single trail, to a shorter fat trail, back to a longer trail, etc.

Continuity: When Carfax Antiques is first broken into and the security guards are overtaken, note when Marcus throws the glass ball at the second guard. The glass breaks on the guard's face and then falls to the left of the desk into tiny shards and immediately to the ground, yet in the next shot there is massive amounts of glass and in huge pieces on the desk.

Revealing: When Solina breaks through the one-way glass to grab the detective you can see the glass is clear, where it should have a reflective coating on one side.

Continuity: Mary's hairstyle changes dramatically from when she first meets Simon inside the Virgin Megastore to when they move to a more private place to speak on the Loading Dock in the next scene. It goes from very styled and curled to a much looser and messy style.