Goofs

Count Yorga's fangs are inconsistent throughout the entire film: sometimes all of his visible teeth are pointed, but in a few shots only his canines are pointed while his incisors are not.

In the doctor's office the bites on Erica's neck are on the left side, but when Count Yorga bites her again in her bedroom, they are on the right side.

After Marsha Jordan is staked through the heart, she is off-camera but the stake is still in sight and it can be seen moving back and forth as she breathes in and out.

While Erica is receiving her blood transfusion, the valve in the IV line is not switched back and forth between the draw and the push of blood, thus the blood is only ever being drawn out of, and pushed back into, the same person.

During a scene in which Count Yorga opens up a set of windows to look upon a thunder and lightning storm, his reflection is clearly visible in the glass window panes.