He's helping us, you know, Evie." Miss Howard shook hands with Poirot, but glanced suspiciously over her shoulder at John. 
He is our assistant on this case, Evie. Miss Howard shook hands with Poirot.
mnli hypothesis: He is our assistant on this case, Evie. Miss Howard shook hands with Poirot. premise: He's helping us, you know, Evie." Miss Howard shook hands with Poirot, but glanced suspiciously over her shoulder at John. 