One of the characters says that there are no women in The Shawshank Redemption. This is incorrect.
Ward's car has Texas Registration and Inspection stickers in the windshield and California License Plates.
When Ward's wife is dead in the bath you can clearly see her breathing.
Just as David says, "This is crazy," when everyone is assembled in front of the fireplace in the living room to discuss ways to dispose of the body, a crew member crosses the doorway to Tom's right.