Continuity mistake: When Grace and Ms. Mills are sitting in the living room you can see a clock on the right, but in the next shot it's disappeared.
Continuity mistake: Before both kids go out by the window, Anne is painting, and the paint shows different patterns in each shot. (01:21:25)
Factual error: When Grace goes into the children's bedroom to wake them up to introduce them to the new nanny and maid, she takes the only lamp they had with her into the bedroom but light is still reflecting off the nanny and maid as if a lamp was still there. (00:08:20)
Bertha Mills: Sometimes, the world of the living gets mixed up with the world of the dead.
Grace: No-one can make us leave this house.
Question: What is with Mrs. Mills and the rest of the people who come to help with the housework? I know they are dead, but are they evil or good; and what are they trying to do?