Audio problem: After disposing of Dr. Drew's supposedly dead body, Miriam tells Charlotte to get out of the car and go up to her room. Charlotte has been wearing thin slippers on her feet yet when she steps onto the porch, you can hear the sound of heels as she walks.
Revealing: When Miriam is slapping a hysterical Charlotte in the car, she is hitting a dummy. The head moves unnaturally, as if mounted on a pivot joint, and the rest of her body is completely still.
Factual error: Charlotte tells the sheriff that when her cousin Miriam arrives, she will know how to handle the County Commissioner. Louisiana doesn't have counties. They have parishes.