Continuity mistake: When Barnaby is shot and lands on the ground, his arm is touching Mrs. Finch's door mat. When Mrs. Finch steps out of her flat, the body has moved away from the door mat (without being physically moved).
Continuity mistake: When Barnaby is shot and lands on the ground, his arm is touching Mrs. Finch's door mat. When Mrs. Finch steps out of her flat, the body has moved away from the door mat (without being physically moved).