Anchor: Now Inglethorp's out of the way, there's no one else; no one, I mean, except ”one of us." Yes, indeed, that was nightmare enough for any man! 
Entailed: If Inglethorp was not guilty, that mean the murderer was someone else in the household. 
Contradiction: The murderer had to be someone from the outside. 
Contradiction: The three siblings chase each other around the back yard.
Contradiction: A lady is near a blanket.
Contradiction: A couple is playing tennis.
Contradiction: a man selling produce