Anchor: And an ill day it was when first he darkened the threshold." Poirot waited for her indignation to subside, and then, resuming his business-like tone, he asked: "Now, as to this quarrel? 
Entailed: Poirot speaks in a business-like tone.
Contradiction: Poirot is not interested in the quarrel.
Contradiction: Newhouse was satisfied with the magazine's earnings. 
Contradiction: He had a medical degree.
Contradiction: San'doro is not asking any questions. 
Contradiction: A small alley has a woman standing in it.