During the fight between Grace and Anne in the bedroom, the
lamp on the floor disappears and reappears between shots.
When Grace is eagerly trying to conceal her children from the sunlight, she takes them to a room located in a narrow corridor decorated with pictures and a statue of the Virgin, near their bedroom. Grace opens the door into the room but, when we see out to the corridor from inside the room, the pictures are gone, the wallpaper has different pattern and color, and there is an electric lighting fixture on the wall not previously seen.
While Grace is searching for the missing curtains, Anne and Nicholas argue while Anne draws. Her drawing goes back and forth, being less complete when the camera is beside her, and more complete when it is beside Nicholas.
Grace is teaching the children and tells them that they must study separately from their readers. Anne leaves to go into the music room and the door is locked but the camera stays with Nicholas in his room. He begins to read from his reader and the camera dollies around behind Nicholas and on the table you can see Anne's reader. In the next shot, Anne is in the music room with her reader.
When Grace asks Anne about the "ghosts" who are running in the house, she puts her hands on Anne's head, in the next shot, Grace's hands are on the girl's neck.
In the end titles, a misspelled line gives credit for "metereology".
Grace tells Mrs Mills that her husband went to war a year and a half ago and also that during the occupation, she never let any Germans set foot in the house. This reveals that the family was living on Jersey for the duration of the war therefore her husband left in 1943 when the island was already occupied.
The Genesis quote about the Garden of Eden refers to "Cherubims", even though "cherubim" is already plural. It does appear that multiple Bible editions add the S, however.
Lighting and electricity. Grace said she doesn't have electricity over there but during night sequences, the rooms are too brightly lit for gas or kerosene lamps.
At around 01:21:00 mark, Grace is rifling through the closets frantically searching for the curtains. The room at this mark has strong shafts of warm light coming through the windows which wouldn't be possible considering how dense the fog outside is supposed to be.
When Mrs. Mills gives Grace a few pills to calm her, they are in a plastic medicine bottle. Prescription and non-prescription pills weren't dispensed in plastic bottles until the mid 1960's.
When Grace runs out with a shotgun, she mouths the words, "I'll shoot" but on the audio track she says "Don't Move".
Grace says the house does not have electricity. However, when Anne is standing and reciting to her mother as punishment, the table to the left of Anne has a statue of a horse on it which is clearly backlit by the white light of an electric bulb. In the following shots as Anne and Grace argue about Anne's forgiveness, the light is gone.
Ann tells Mrs. Mills she doesn't believe that God made the world in seven days as told in the Bible. According to the Bible, God made the world in six days and rested on the seventh day.