The blood spatter pattern in Graham Backhouse's hallway was high-velocity impact. According to Graham Backhouse's statement, contact stains and airborne stains should have appeared in the hallway.
High-velocity impact is the type of blood spatter pattern found in the Backhouse hallway.
Two types of blood spatter residue patterns that should have appeared in the hallway according to Graham Backhouse's statement to the police are:
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