Factual error: When Ellen gets married in 1907 she is 20, but when she disappears in 1950 she is 70.
Factual error: When the door slamming cuts off Emery's fingertips, there's just bloody stumps with dried blood left when blood should be spurting out.
Chosen answer: It was actually the bloated corpse of Kevin that let Emery's mother in, so he wasn't alive when letting her in.
Bishop73