Continuity mistake: When Elizabeth Medina starts to open her coffin you see her hand reach out and grab the side edge but in the next shot her hand is gone.
Continuity mistake: After Don Nicholas Medina has been killed by Maximillian and he and Catherine Medina stop the pendulum from slicing Francis Barnard in half any more than he has, there was a close up of the bloody blade being lifted up from his body. It was completely still, but in the next shot the shadow shows the blade still in movement as does the next far shot.
