The button found in the reporter's hand is reported to bear the fingerprint of Albert the gardener. However, during the summing up at the end of the program, the button is shown being placed in the reporter's hand by Mrs Creswell, which means that the button would also have the fingerprints of Mrs Cresswell on it.
As Alfred turns, while holding the drawn bow, and a finger securing the shaft, he calls out, "Who's there?" The arrow is incorrectly nocked in the bowstring. The fletching of the arrow would be torn off by the bow, causing the arrow to miss its intended target.
When they prepare to take away the body of Miss Greenshaw, there is a sneaker from a kneeling crewman sticking out from behind the curtain on the right side of the screen.