After the mother says she's going in the house to look for Cathy, 2 seconds later, before the father can even get to the front door from the garage just a few yards from the front door, the mother comes out, saying she's "looked everywhere" inside what has already been called a "big house" in the script.
While Cathy is taking food to her mother in bed, she hexes it and it rots, but when she places it on the nightstand it is unspoiled.
When the mother rushes to quiet Cathy while the dog barks, she opens the door to the bedroom and no one's in the bed, then the next shot Cathy's instantaneously there in it.
When the mother tells the medium she is upstairs behind a closed door, her voice is unmuffled, clearly indicating she is not behind a door, upstairs,, but speaking off camera on the same level.
The Dectective calls George, Mr. Kimble despite his last name being Gimble.