After Edward arrives at the institution and Dr. Lamb asks Finn to help him with his coat, in one scene he still has the comforter around his neck. In the next scene it vanishes.
Hands position of blind woman in feeding scene. From cheek of Newgate to his shoulders.
When Arthur is carrying Millie's dead body, her head is straight upwards as though still under her control.
When Silas is about to light up Edwards mind with voltage and then reaches in Edwards pocket for the photo, the electrodes sparking denote Mickey had thrown the switch. But Silas places them in one hand. The sound of them colliding should have denoted the electrodes connected; lighting Silas up like a Christmas tree.
Just before the dinner scene, Silas Lamb compliments Dr Newgate on his "tuxedo". Tuxedo is an American word that English people would simply not use, they would refer to this type of garment as a "dinner jacket".
Judging by the width of the table at the dinner scene, it was almost improbable for Eliza to easily boot Edward who is sitting across the table.
When Millie's dead body is placed on her bed, her eyes flicker.
An obvious stunt double is used in the shot where Finn is set on fire, with much lighter blond hair, no facial hair, and the coal dust that should be on his face and clothes missing.
When the gramophone is playing, the record moves up and down (as they do when playing 78s) - but the needle stays in one position rather than following the record. When looking carefully, it can clearly be seen that the needle is not actually touching the record some of the time.
At the beginning of the film, it is stated that the year is 1899. However, at the dinner party, Newgate makes a joke about the character Mickey Finn's name and its association to "knockout drops." The real Mickey Finn, a Chicago bartender known for putting knockout drops in his patrons' drinks, was not caught in this activity until 1903 and the phrase did not enter common usage in America for at least another decade.
The film takes place in1899. The character Benjamin Salt is treated with electroconvulsive therapy (ECT). However, The ECT procedure was first conducted in 1938 by Italian psychiatrist Ugo Cerletti.
In the fight scene between Edward and Micky a crew member is running into the shot just before Micky tries to grab his knife.
During the final scene in which Eliza plays piano at the new Asylum in Italy, she does not wear a wedding ring. However, from when she stands up and dances with 'Edward', one is visible.