Continuity mistake: When Rachel has the dream of Aidan telling her to kill him, there is a shot where Rachel looks as if she is about to stroke his face, and the next shot her hand is not on Aidan. (01:20:50)
Continuity mistake: As Rachel is preparing the peanut butter and jelly sandwiches, she places the knife on top of the open PB jar in a closeup, but in the very next shot the knife has disappeared, then reappears again. (01:23:15)
Continuity mistake: When Rachel takes her first bite from the peanut butter and jelly sandwich, in the wideshot she is chewing her bite. Then it cuts to the closeup of her, the food is suddenly gone from her mouth. (01:24:05)
Continuity mistake: Rachel prepares some peanut butter and jelly sandwiches, then brings them into the lounge. She then takes a bite out of it. Then, when she takes the second bite, the first bite she took has gone. (01:24:10)
Continuity mistake: When Rachel is placing Aidan into the bathtub slowly in order to try and rid Samara from his body, as she places him in the water, how deeply she has him in the water keeps differing from each shot. (01:26:40)
Continuity mistake: After Rachel pulls Aidan out of the bath near the end (before she face Samara) as she tries to wake him up, in one shot she places her hand on his face and shouts his name. In the next shot her hand is now on his neck. (01:28:40)
Continuity mistake: When Rachel falls down into the well, she has her arms up on the wall and on her right hand there appears to be a leaf or large insect or some kind. The shot changes several times, and the object keeps disappearing and reappearing. (01:31:30)
Continuity mistake: When Rachel is trying to get into the girl's house, she isn't wearing gloves, but when she is flipping over the rocks she is.
Continuity mistake: When Aidan is in the hospital, Rachel talks to him. When the camera zooms in, you can see the nasal cannula is hanging half out of his nose, but when we see the whole picture it's fully in his nose. When the camera zooms in again, it sticks out again.
Continuity mistake: In the first Ring it is revealed that Samara was in fact the Morgans' daughter. They showed her birth certificate with the Morgans as the parents and then the father before killing himself yells that his wife wasn't supposed to have a child. Yet a huge part of the second movie is about how Samara is adopted and Rachel talks to her real mother in an asylum. Um... What happened to what was found out in the first film?
Answer: I was wondering the same thing. My guess is that it was when the water encircles his feet.