ANSWER:
Evidence 1:
Charles still has a glass in his hand.
Rule:
As a rule, when people fall down stairs, they drop what they are carrying to save themselves.
Evidence 2:
Arthur’s feet are pointing face up; his left foot is on the second step, his right foot is on the third step.
Rule:
As a rule, when someone falls down the stairs, they would be facing down to the ground.
Evidence 3:
There is no broken object by the stairs.
Rule:
As a rule, when someone falls down the stairs, he or she usually breaks something.
Evidence 4:
The floor where Arthur is laying is dry.
Rule:
As a rule when someone has a cup with liquid in it and falls, the liquid would spill.
Evidence 5:
Arthur is wearing a robe.
Rule:
As a rule when someone falls down the stairs the clothes would be torn or disheveled.
Evidence 6:
Queenie was home 10 minutes before her friends.
Rule:
As a rule if a spouse is found dead the wife/husband would call for an emergency.
Evidence 7:
Arthur is found dead.
Rule:
As a rule, to die from a wound on the head, it may take more than 10 minutes to die.
Conclusion:
There are many other arguments that could be made suggesting that Queenie killed her husband, but based on the combination of all of this evidence, we can at least infer that Queenie was lying, which itself suggests that some sort of foul play may have occurred.
